Varsity - Science

Question 1

What are the three methods of thermal energy transfer?

Answer 1

convection, conduction, and radiation

Question 2

Identify the biome with a name meaning “treeless plain,” which is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons.

Answer 2

Tundra

Question 3

What is the name for ions in solution that don’t react with the other ions?

Answer 3

Spectator (ions)

Question 4

What is the theoretical limit for a population’s growth within a habitat?

Answer 4

Carrying Capacity

Question 5

Name the pile of debris composed of rock fragments deposited by a retreating glacier.

Answer 5

Moraine

Question 6

Calculate the molarity of a solution containing 160 grams of sodium hydroxide in two liters of water.

Answer 6

2 (molar or moles/liter)

Question 7

What term is used to describe how each strand in a double-stranded DNA molecule runs in opposite directions?

Answer 7

Antiparallel

Question 8

What 2 compounds are produced by the complete combustion of a hydrocarbon?

Answer 8

Carbon Dioxide (CO2) and Water (H2O)

Question 9

What does the area under an acceleration time graph represent about the motion of an object?

Answer 9

Change in velocity (must say both change and velocity)

Question 10

The light reactions of photosynthesis occur on what part of the chloroplast?

Answer 10

Thylakoid Membrane

Question 11

What unit is equivalent to kilograms meters per second squared?

Answer 11

Newtons

Question 12

What gas makes up about 97% of Venus’ atmosphere?

Answer 12

Carbon Dioxide

Question 13

Name the biology term for the protein filaments that, along with myosin, allow muscles to contract.

Answer 13

Actin

Question 14

What is the unit of magnetic field strength?

Answer 14

Tesla

Question 15

How many electrons are there in the outer energy level of a potassium atom?

Answer 15

1

Question 16

What two substances will form from the heating of calcium carbonate?

Answer 16

Calcium Oxide and Carbon Dioxide

Question 17

Through what galactic process does a large galaxy merge with another galaxy?

Answer 17

Galactic Cannibalism

Question 18

What term is used for a group of three bases on the DNA molecule?

Answer 18

Codon

Question 19

What type of organism is found at the second trophic level of the food chain?

Answer 19

Herbivores

Question 20

What magnesium metal is placed in hydrochloric acid, which element is reduced, and which element is oxidized?

Answer 20

Magnesium is Oxidized, Hydrogen is Reduced

Question 21

A cyclist travels 5 miles east and then 12 miles south. What is the magnitude, in miles, of the cyclist’s displacement?

Answer 21

13 (Miles)

Question 22

Name the cell organelles that are stacked, flattened membranes that sort proteins and other cellular substances and package them into membrane-bound structures called vesicles.

Answer 22

Golgi Bodies

Question 23

The loudness of a sound wave is related to what physical measurement of the sound wave?

Answer 23

Amplitude (or Pressure)

Question 24

On the geologic time scale, in what current epoch is the Earth?

Answer 24

Holocene Epoch

Question 25

Name the hydrogen carrier or electron acceptor in photosynthesis that provides energized electrons to the Calvin Cycle.

Answer 25

NADP (accept NADPH)

Question 26

What is the name of the British physicist who is most widely accredited with the discovery of the electron?

Answer 26

(J.J.) Thomson

Question 27

Use acceleration due to gravity as 10 meters per second squared. A ball is thrown straight up at 30 meters per second. Neglecting air resistance, how high does the ball go?

Answer 27

45 Meters

Question 28

Where do most comets with a revolution of greater than 200 years originate?

Answer 28

The Oort Cloud

Question 29

Carbon 14 is used in carbon dating to find out how long ago a living organism died. What isotope does carbon-14 decay into?

Answer 29

Nitrogen 14 (Must Include the 14)

Question 30

What is the term for the hole in the epidermis of a leaf that is used for gas exchange?

Answer 30

Stomata (Also Accept Stomatic Complex or Stoma)

Question 31

A boy exerts a force of 64 Newtons when he lifts a box half a meter. How much work does he do?

Answer 31

32 Joules

Question 32

The control of breathing is centered in which area of the brain?

Answer 32

Medulla Oblongata

Question 33

How many protons, neutrons, and electrons are in an atom of tungsten, whose atomic number is 74 and whose atomic mass is 185?

Answer 33

Protons = 74
Neutrons = 111
Electrons = 74
(Stating 74, 111, 74 in that order is also acceptable)

Question 34

What biology term refers to the movement of individuals out of a population?

Answer 34

Emigration

Question 35

What is the term for a quickly spinning neutron star that emits a beam of electromagnetic radiation?

Answer 35

Pulsar

Question 36

Three resistors with resistance of 20 ohms, 30 ohms, and 50 ohms are all connected in series to a 125 volt power supply. What is the current in the circuit?

Answer 36

1.25 Amps or Amperes

Question 37

Using acceleration due to gravity as 10 meters per second squared, a ball is thrown straight up at 55 meters per second. Neglecting air resistance, how many seconds total is the ball in the air before returning to the height it was thrown?

Answer 37

11 (seconds)

Question 38

What two-word term is given to two or more compounds with the same chemical formula but different arrangements of atoms?

Answer 38

Structural Isomers

Question 39

In mRNA, what does the nucleotide adenine pair with?

Answer 39

Uracil

Question 40

What Danish physicist in 1913 introduced an atomic model with electrons in discrete orbits around a positively charged nucleus?

Answer 40

Niels Bohr

Question 41

What is the chemical substance secreted by members of an animal species that affects other members of the same species?

Answer 41

Pheromone

Question 42

What Era is divided into the three periods of Triassic, Jurassic, and Cretaceous?

Answer 42

Mesozoic

Question 43

What term is given to four chromatids?

Answer 43

Tetrad

Question 44

What type of acceleration is defined as acceleration directed toward the center of a circular path?

Answer 44

Centripetal (Acceleration) (Do Not Accept Centrifugal)

Question 45

What theory states that repulsion between the sets of valence electrons surrounding an atom causes these sets to be oriented as far as possible?

Answer 45

Valence Shell Electron Pair Repulsion Theory or VESPR Theory (Pronounce “Vesper”)

Question 46

What name is given to the pollen-producing reproductive organ of a flower?

Answer 46

Stamen

Question 47

What term is given to the minimum angle of incidence that produces total internal reflection?

Answer 47

Critical (Angle)

Question 48

Name the layer of Earth’s crust that is just below the lithosphere.

Answer 48

Asthenosphere

Question 49

What biology term refers to the amount and variety of organisms in an area?

Answer 49

Biodiversity

Question 50

Whose loop and junction rules govern voltage and current in electric circuits?

Answer 50

Kirchoff

Question 51

Determine the volume in milliliters of a 0.25 molar sodium hydroxide solution needed to titrate 100 milliliters of a 0.50 molar hydrochloric acid solution.

Answer 51

200 (milliliters)

Question 52

Give the name of the scientific discipline that studies the origin and development of the universe.

Answer 52

Cosmology

Question 53

Barbara McClintock, the first American woman to win the Nobel prize, discovered this type of gene, commonly known as “jumping genes.”

Answer 53

Transposable Genes (or Transposons)

Question 54

Rounded to the nearest whole number, what is the mass of 1 mole of acetic acid?

Answer 54

60 Grams

Question 55

What physics quantity is the absolute value of the slope of a position time graph?

Answer 55

Speed (Not Velocity), also accept average speed or instantaneous speed

Question 56

What term is used to designate the separation of an iceberg from the front of a glacier when the glacier reaches the sea?

Answer 56

Calving

Question 57

What is the term for random changes in allele frequencies in a population?

Answer 57

Genetic Drift

Question 58

A 20-kilogram rocket is launched at an angle of 35 degrees to the horizontal at a speed of 30 meters per second. Neglecting air resistance, at what other angle will the rocket have the same horizontal range if launched at the same speed?

Answer 58

55 (Degrees)

Question 59

Name the condition where sister chromatids fail to segregate during mitosis.

Answer 59

Nondisjunction

Question 60

What block of elements on the periodic table includes transition metals from Group 3 to Group 12?

Answer 60

D (Block)

Question 61

What part of the brain controls hunger, thirst, and body temperature?

Answer 61

Hypothalamus

Question 62

Using acceleration due to gravity as 10 meters per second squared, a ball is thrown straight horizontally at 30 meters per second from a 20-meter-high platform. Neglecting air resistance, how far horizontally does it travel before striking the ground?

Answer 62

60 Meters

Question 63

What flammable gas is produced when an acid is mixed with an active metal?

Answer 63

Hydrogen (Gas)

Question 64

Name the Austrian physicist who worked on radioactivity and nuclear physics and was a co-discoverer of nuclear fission, an achievement for which this person’s colleague won the Nobel Prize for Chemistry in 1944.

Answer 64

(Lise) Meitner

Question 65

What precipitate will result from the double-displacement reaction of sodium carbonate with calcium chloride?

Answer 65

Calcium Carbonate

Question 66

What type of organism forms it own nutritional substances from simple inorganic substances such as carbon dioxide?

Answer 66

Autotroph

Question 67

Kepler’s first law states that a planet’s orbit is one of these shapes with the sun at one focus.

Answer 67

Ellipse

Question 68

If an atom undergoes alpha decay, what happens to its atomic number?

Answer 68

It decreases by two

Question 69

What is the phenotypic ratio that results from a dihybrid cross?

Answer 69

Nine to Three to Three to One

Question 70

What two-word term is given to large membrane-bound compartments in plant cells where water, waste products, and nutrients can be stored?

Answer 70

Central Vacuole

Question 71

What principle states that the buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid the body displaces?

Answer 71

Archimedes (Principle)

Question 72

What is the pH of a one times ten to the negative three molar solutions of hydrochloric acid?

Answer 72

3

Question 73

In physics, what is the term for the bending of waves as they pass from one medium to another?

Answer 73

Refraction

Question 74

Give the collective name by which the stigma, style, and ovary of a flower are known.

Answer 74

Carpel

Question 75

What do we call a fold in sedimentary strata that resembles an arch?

Answer 75

Anticline

Question 76

What electrical circuit element, consisting of two parallel plates separated by a small gap, has the ability to store charge?

Answer 76

Capacitor

Question 77

What two series make up the f-block?

Answer 77

Lanthanide and Actinide Series

Question 78

What do ecologists call the efforts by individuals of common or different species in a community to use the same limited resources?

Answer 78

Competition

Question 79

What is the ratio of work output to work input in a machine?

Answer 79

Efficiency

Question 80

What are the elements whose symbols written side-by-side spell N-Er-Dy (nerdy)?

Answer 80

The elements are Neon, Erbium, and Dysprosium

Question 81

Which protein forms the main constituent of an insect’s exoskeleton?

Answer 81

Chitin

Question 82

What is the name for the rotational analogue of force which is calculated as the cross product of the radius and force vectors?

Answer 82

Torque

Question 83

Give the name of the decay process that turns a neutron into a proton and emits an electron.

Answer 83

Beta minus decay OR negative beta decay OR beta decay

Question 84

What type of organism derives its nutritional requirement from other organisms?

Answer 84

Heterotroph

Question 85

Name the three naturally occurring strongly magnetic elements.

Answer 85

Iron, Nickel, Cobalt

Question 86

What is the current through a 12 ohm light bulb connected to a 6-volt battery?

Answer 86

0.5 or 1/2 amps or amperes

Question 87

What small lead-like parts of a flowering plant protect the new buds and spread out as the bud matures?

Answer 87

Sepals

Question 88

Identify the two main molecules forming cell membranes.

Answer 88

Phospholipids and Proteins

Question 89

What is the tendency for a process to occur that leads to the highest state of disorder?

Answer 89

Entropy

Question 90

What is the magnitude of the momentum change of a 1,400 kg car traveling at 20 m/s when it is brought to rest in 2.0 seconds?

Answer 90

28,000 kg m/s or Newton-seconds

Question 91

How many pi bonds does a molecule of carbon monoxide contain?

Answer 91

2

Question 92

What term is given to an area where salt water meets fresh water?

Answer 92

Estuary

Question 93

What is the name given to the fatty, insulating covering of an axon?

Answer 93

Myelin Sheath

Question 94

What type of tectonic plate boundary occurs where two plates slide past each other?

Answer 94

Transform Boundary

Question 95

What syndrome leading to low fertility in males is caused by a person having two X chromosomes and a Y chromosome?

Answer 95

Klinefelter’s Syndrome

Question 96

How much power is required to complete 200 Joules of work in 5 seconds?

Answer 96

40 Watts

Question 97

What is the collective name for the three layers that surround the spinal cord and the brain?

Answer 97

Meninges

Question 98

What name is given to the most posterior part of the brain that controls such involuntary activities as breathing, heartbeat, blood pressure, and peristalsis, and its nerve fibers connect the spinal cord to various parts of the brain?

Answer 98

medulla (oblongata)

Question 99

What disaccharide is formed when two glucose molecules join

Answer 99

maltose

Question 100

What is the final stable element in the Uranium decay chain?

Answer 100

Lead

Question 101

What general term is given to the material through which sound waves vibrate?

Answer 101

the medium

Question 102

To the nearest whole gram, what is the molecular mass of sucrose, C12H22O11 (read C-12-H-22-O-11)?

Answer 102

342

Question 103

Identify the formal naming system in which living things are given a name composed of two parts: the genus and the species.

Answer 103

Binomial nomenclature

Question 104

Calculate the index of refraction for a material if the incident angle is 45 degrees and the refracted angle is 30 degrees.

Answer 104

1.4 OR square root of 2 OR radical 2 OR 1.41

Question 105

In chemistry, what name is given to the solid that separates out of a solution?

Answer 105

Precipitate

Question 106

What is the term for the product of the angular velocity of a body and its moment of inertia?

Answer 106

angular momentum

Question 107

(60 second) What is the molarity of 80g of sodium hydroxide in 2.5 liters of aqueous solution.

Answer 107

0.8 Molar, or 0.8 Molarity

Question 108

What is the name given for the fluid matrix of a chloroplast?

Answer 108

stroma

Question 109

What is considered the ultimate source of genetic variation in a population?

Answer 109

mutation(s)

Question 110

What objects are classified using a Hertzprung-Russell diagram?

Answer 110

Stars

Question 111

Calculate the total resistance of two resistors in parallel each with a resistance of 12 ohms.

Answer 111

6 (ohms)

Question 112

What biological phrase describes the process by which isolated populations evolve independently?

Answer 112

Divergent evolution

Question 113

What term refers to bonding in molecules that cannot be correctly represented by a single Lewis structure?f

Answer 113

Resonance

Question 114

What principle relates the buoyant force to the weight of fluid displaced?

Answer 114

Archimedes

Question 115

What is the charge of an ion of aluminum?

Answer 115

Three plus, positive 3, plus 3, or 3 positive

Question 116

In a chloroplast, what term refers to one stack of thylakoids?

Answer 116

Granum

Question 117

What is a dense cloud of super-hot gases and rock fragments that races downhill from an erupting volcano called?

Answer 117

Pyroclastic flow

Question 118

In thermodynamics, what is the name for a process in which the pressure is kept constant?

Answer 118

Isobaric

Question 119

What is the name given to the species of a plant that first enters a region after all visible forms of plants have been removed?

Answer 119

Pioneer (species)

Question 120

Name the type of particles that have 1/3 the charge of an electron, have six “flavors”, have unique colors, and are never found alone.

Answer 120

Quarks

Question 121

What is the name for the area where a leaf joins the stem of a plant?

Answer 121

node

Question 122

Using acceleration due to gravity as 10 meters per second squared, how far does a ball travel in 2 seconds if it is thrown straight down at a speed of 20 meters per second?

Answer 122

60 meters

Question 123

Name both of the elements that are liquid at room temperature.

Answer 123

Mercury and bromine

Question 124

In a single replacement reaction between sodium metal and iron two chloride, which element is reduced?

Answer 124

Iron

Question 125

How many electrons are in the p sublevel of fluorine?

Answer 125

5

Question 126

The complete combustion of ethane (C 2 H 6) yields carbon dioxide and water. How many moles of water would be produced by the combustion of 2 moles of ethane?

Answer 126

6

Question 127

What is the name of the outer membrane surrounding the heart?

Answer 127

Pericardium

Question 128

What is the name for the genetic failure in which chromosomes are unable to separate properly?

Answer 128

Nondisjunction

Question 129

What term refers to a planet that rotates clockwise instead of the usual counter-clockwise motion?

Answer 129

Retrograde (planet)

Question 130

What is the first stage in the life cycle of a star?

Answer 130

(stellar or dark) nebula

Question 131

What are the two basic types of collisions?

Answer 131

elastic and inelastic

Question 132

What physics quantity is equal to a change in momentum?

Answer 132

Impulse

Question 133

Give the mass number of the isotope produced by 6 beta and 2 beta decays of uranium 238.

Answer 133

214

Question 134

What is described as the heat needed to change a unit mass of a substance at its melting temperature from a solid into a liquid?

Answer 134

heat of fusion OR enthalpy of fusion

Question 135

Which group in the food web would most likely have the greatest biomass?

Answer 135

Producers or autotrophs

Question 136

What tissue holds the intestines in position within the abdominal cavity?

Answer 136

mesentery

Question 137

What is the force that pulls or stretches rock?

Answer 137

tension

Question 138

Through what physics process is mechanical energy transferred or transformed?

Answer 138

Work

Question 139

What is the SI unit of current?

Answer 139

Ampere

Question 140

Name the German physiologist who studied and discovered pepsin, is credited with inventing the term metabolism, developed cell theory, and has cells from the peripheral nervous system named for him.

Answer 140

Theodore Schwann

Question 141

The Hawaiian Islands were formed from what type of volcano?

Answer 141

Shield volcano

Question 142

The inflammation of a key digestive system organ that secretes bile is commonly referred to as this.

Answer 142

hepatitis

Question 143

What is the name for groups of c ells that work together to perform a common function?

Answer 143

Tissues

Question 144

What name is given to the process in which ions form solids that drop out of solution?

Answer 144

precipitation

Question 145

How many atoms of chlorine are in 5 molecules of carbon tetrachloride?

Answer 145

20

Question 146

Two resistors with values of 5 ohms and 5 ohms are connected in parallel. This combination is connected in series with another 5 ohm resistor. What is the equivalent resistance, in ohms, of this circuit?

Answer 146

7.5

Question 147

Why type of lipid is found in the cell membrane of eukaryotic cells?

Answer 147

Phospholipids

Question 148

In what direction are air currents shifted, due to the Earth’s rotation?

Answer 148

right or clockwise

Question 149

What is the frequency of a wave with the measured period of 0.25 seconds?

Answer 149

4 Hertz

Question 150

Name the bottom region of oceans and bodies of fresh water.

Answer 150

Benthic zone

Question 151

What term refers to the geologic principle that in an undisturbed rock sequence the oldest rocks are on the bottom?

Answer 151

(The Law or Principle of) Superposition

Question 152

What has been reached when the two solutions used in a titration have the same normality?

Answer 152

equivalence point

Question 153

What quantity is obtained when the speed of light in a vacuum is divided by the speed of light in a given material?

Answer 153

Index of refraction

Question 154

Which term refers to DNA during interphase?

Answer 154

Chromatin

Question 155

Find the molarity of three grams of methanol (C H 3 O H) in five hundred grams of water.

Answer 155

O.20 Molar

Question 156

What are the chemical names for the products when the following solutions are mixed: silver nitrate and potassium chloride?

Answer 156

Potassium nitrate and silver chloride
or
silver chloride and potassium nitrate

Question 157

What is the most common term used in genetics to describe the observable physical characteristics of an organism caused by the expression of a gene or set of genes?

Answer 157

phenotype

Question 158

Which physical quantity is defined as force per unit area?

Answer 158

pressure

Question 159

What chemistry term refers to a compound without water?

Answer 159

Anhydrous

Question 160

Name the scientist that was awarded the Nobel Prize in 1921 for his work on the photoelectric effect.

Answer 160

(Albert) Einstein

Question 161

What term is given to long, thread-like organelles, used in locomotion, that protrude from the surfaces of many eukaryotic and prokaryotic cells?

Answer 161

Flagella

Question 162

What is the part of a longitudinal wave in which the particles are at the lowest pressure?

Answer 162

Rarefaction

Question 163

Name the scientist credited with Law of Segregation and the Law of Independent Assorment

Answer 163

Gregor Mendel

Question 164

Name the major geologic fault located in California.

Answer 164

San Andreas

Question 165

What level comes between order and genus in the taxonomic hierarchy?

Answer 165

Family

Question 166

What are the four main tissue types found in the human body?

Answer 166

Epithelial, connective, muscle, nervous (in any order)

Question 167

Name the solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases added to it.

Answer 167

Buffer or buffer solution

Question 168

What is the only bone in the body that does not articulate with any other bone

Answer 168

Hyoid

Question 169

During what geological period did the first land animals develop?

Answer 169

Devonian

Question 170

What type of force holds ions together in salts such as calcium fluoride?

Answer 170

Electrostatic (do not accept ionic bond; bond does not equal force)

Question 171

What is the ideal mechanical advantage of an inclined plane that is 2 m high with an incline distance of 14 m?

Answer 171

Seven

Question 172

What is the middle body region of adult insects called?

Answer 172

Thorax

Question 173

In the world of particle physics, what does LHC stand for?

Answer 173

Large Hadron Collider

Question 174

(60 seconds) How many moles of oxygen are required to completely combust two moles of methane

Answer 174

4 moles

Question 175

Identify the sac located between the tendon and the bone which delivers lubrication.

Answer 175

bursa

Question 176

What is the most plentiful metal in the Earth’s crust?

Answer 176

Aluminum

Question 179

What is the smallest amount of energy that molecules need to react?

Answer 179

Activation energy

Question 180

What is the name of fungi that feed on dead matter?

Answer 180

Saprophytes

Question 181

If a gas sample at constant temperature has a pressure of 1.5 atmospheres when placed in a 10.0 Liter flask, what will
the sample’s gas pressure in atomspheres become if its volume increases to 50.0 Liters?

Answer 181

0.3 (atmospheres)

Question 182

Using 10 meters per second squared as acceleration due to gravity, what is the gravitational potential energy in Joules of a 20-kilogram block raised off the ground 5 meters?

Answer 182

1000 (Joules)

Question 183

What type of mimicry is displayed by the viceroy butterfly as it mimics the monarch butterfly?

Answer 183

Mullerian (myoo-LER-ee-uhn) mimicry

Question 184

Name the device that only allows current to flow in one direction.

Answer 184

A diode

Question 185

What name is given to the part of the earth composed of oceans, lakes, rivers, and all other bodies of water and ice?

Answer 185

Hydrosphere

Question 186

What are the four nitrogenous bases that make up Ribonucleic Acid in eukaryotic organisms?

Answer 186

Adenine, Guanine, Cytosine, and Uracil

Question 187

What organelle, other than the nucleus, would contain DNA in an animal cell?

Answer 187

MItochondria

Question 188

Name the principle which states that the faster the air moves, the less pressure it exerts.

Answer 188

Bernoulli’s (Principle)

Question 189

What is the oxidation number for sulfur in sulfuric acid, H-2 SO-4?

Answer 189

x=+6 (must say positive 6)

Question 189

What is used by scientists to cut DNA at or near specific nucleotide sequences?

Answer 189

Restriction enzyme

Question 190

Name the long, graduated tube, closed at one end, which is used to collect gas.

Answer 190

Eudiometer

Question 191

Give the name of the instrument used to detect earthquakes.

Answer 191

Seismograph (size-mo-graph)

Question 192

A population is not undergoing what process if it is in Hardy-Weinberg Equilibrium?

Answer 192

Evolution

Question 193

In physics, what is the name given to the perpendicular force a surface applies to an object that is in contact with the force?

Answer 193

Normal (force)

Question 194

On a weather app, what line connects points of equal barometric pressure?

Answer 194

Isobar

Question 195

What is the chemical formula for the compound commonly referred to as baking soda?

Answer 195

NaHCO3

Question 196

What are the three basic tissue systems of a vascular plant body?

Answer 196

Dermal, vascular, and ground

Question 197

How many times louder is the sound of 40 decibels compared to a sound of 10 decibels.

Answer 197

1,000

Question 198

What is the term for maximum speed that an object falling through air can reach?

Answer 198

Terminal velocity or terminal speed

Question 199

What symbiotic relationship is indicated by two species living closely together to the benefit of both species?

Answer 199

Mutualism

Question 200

What are the names of two allotropic forms of oxygen?

Answer 200

Oxygen and ozone

Question 201

Give the term for a colloid suspension of fine solid particles or liquid droplets in a gas.

Answer 201

Aerosol

Question 202

What organelle is responsible for the formation of spindle fibers during cell division of animal cells?

Answer 202

Centrioles

Question 203

What do you have to do to the length of a pendulum in order to double its period?

Answer 203

Quadruple it or increase it by a factor of 4

Question 204

What term is given to a DNA molecule, usually found in bacteria, that can replicate independently from the main chromosome?

Answer 204

Plasmid

Question 205

What is the name for the outer envelope of gas surrounding the sun?

Answer 205

Corona

Question 206

What is the oxidation number of sulfur in the sulfate ion?

Answer 206

Positive 6

Question 207

If the distance between two planets is tripled, what happens to the force of gravitational pull between the planets?

Answer 207

9 times less pull or 1/9th as much pull

Question 208

What is the final electron acceptor in the electron transport chain in oxidative phosphorylation?

Answer 208

Oxygen

Question 209

What is the most common oxidation number for the Halogen group on the periodic table?

Answer 209

Negative 1

Question 210

What is the area under the curve of a velocity vs. time graph?

Answer 210

Displacement or Change in Position (not distance)

Question 211

What types of clouds form the eye of a hurricane?

Answer 211

Cumulonimbus

Question 212

What is a type of solution that produces no change in cell volume because of osmosis?

Answer 212

Isotonic or isotonic solution

Question 213

Cells prepare for cell division during what phase?

Answer 213

Interphase

Question 214

What is the physics term for how the type of material affects the resistance of a wire?

Answer 214

Resistivity

Question 215

How many electrons can occupy any single orbital?

Answer 215

2

Question 216

What is the process called where the solid will become a gas without passing through the liquid phase?

Answer 216

Sublimation

Question 217

Which biological process involves synthesizing chains of amino acids to build a protein from messenger RNA?

Answer 217

Translation

Question 217

What is the difference in the elevation of terrain called on a contour map?

Answer 217

Relief

Question 218

What is another name for the primary consumers in a food web?

Answer 218

Herbivores

Question 219

What is the oxidation number of the chlorine atom in the perchlorate ion?

Answer 219

+7 or 7+

Question 220

What two factors affect the period of a pendulum?

Answer 220

Acceleration due to gravity and length of the cord

Question 221

What term is used to describe a plant’s growth response to gravity?

Answer 221

Geotropism

Question 222

What is the point that defines the edge of a black hole?

Answer 222

The event horizon

Question 223

What is the more common name for potential difference?

Answer 223

Voltage

Question 224

What two quantities about a planet’s orbit do Kepler’s Third Law relate to one another?

Answer 224

Period (or orbital period or time for one revolution) AND radius of orbit (or distance to the sun or semi major axis)

Question 225

What is the mass percent of carbon in the compound methane?

Answer 225

75% (percent) Carbon

Question 226

Name the term that refers to the alleles being both dominate or both recessive.

Answer 226

Homozygous

Question 227

What is the name for the relationship between two organisms of different species in which one organism benefits, while the other is generally not helped or harmed?

Answer 227

Commensalism

Question 228

What scale is used to express the magnitude of earthquakes?

Answer 228

Richter (scale)

Question 229

What is the oxidation number of nitrogen in the nitrate ion?

Answer 229

+5

Question 230

Give the name for a glaciated valley now flooded by the sea.

Answer 230

Fjord

Question 231

What do we call the apparent change of frequency fo a sound caused by the relative motion between the object emitting the sound and the listener?

Answer 231

Doppler effect

Question 232

What two word term describes the movement of a particle through a membrane against a concentration gradient with the use of energy from ATP?

Answer 232

Active transport

Question 233

What is the charge on an ammonium ion?

Answer 233

Positive 1 or +1

Question 234

What are the two types of collisions?

Answer 234

Elastic and inelastic

Question 235

What two word term is used to describe a situation in which one allele is not completely dominant over the other?

Answer 235

Incomplete dominance

Question 236

What is the third derivative of a position time function called?

Answer 236

Jerk (or jolt or surge or lurch)

Question 237

If the half-life of a radioactive substance is one year, in how many years will 1/16 of the original material be left?

Answer 237

4 (years)

Question 238

What glands produce cortisol and epinephrine and are located at the top of the kidneys?

Answer 238

Adrenal (glands)

Question 239

Identify the Swedish naturalist and botanist who classified plants and animals, and standardized terminology and nomenclature related to classification.

Answer 239

CARL VON LINNE (ACCEPT
CAROLUS LINNAEUS)

Question 240

Identify the type of nuclear reaction that produces vast amounts of energy in a hydrogen bomb.

Answer 240

FUSION

Question 241

Give the name of the only bird that has 2 toes on each foot.

Answer 241

OSTRICH

Question 242

What mass of fluorine gas (atomic weight = 19.0) is contained in 112 liters at 1 atmosphere pressure and 0˚ C ?

Answer 242

190 GRAMS

Question 243

What is the name given to organisms that can manufacture their own food?

Answer 243

AUTOTROPHS

Question 244

What term describes the bicarbonate ion as one able to donate a proton or accept a
proton in a chemical reaction?

Answer 244

AMPHOTERIC (ACCEPT
AMPHIPROTIC)

Question 245

Name the process which occurs when anaerobic bacteria break down nitrates and release nitrogen gas back into the
atmosphere.

Answer 245

Denitrification

Question 246

What is the momentum of a car with a mass of 1,300 kilograms traveling at a speed of 28 meters per second?

Answer 246

36,400 kilogram meters per second

Question 247

How many different isomers are possible for a hydrocarbon with the molecular formula C 4 H 10?

Answer 247

2

Question 248

What are the two protein myofibrils that make up filaments of a muscle?

Answer 248

Actin and myosin

Question 249

Name the property of a mineral that describes how light is reflected from its surface.

Answer 249

Luster

Question 250

How many moles of sugar are required to make 4 Liters of a saturated solution having a concentration of 0.6 molar?

Answer 250

2.4

Question 251

A compound has an empirical formula CH. If the molecular mass is 78, what is the molecular formula?

Answer 251

C6H6

Question 252

Using 10 meters per second squared, a 20.0 kilogram child on roller skates, initially at rest, rolls 1.50 m down an
incline at an angle of 30.0 degrees with the horizontal. If there is no friction between incline and skates, what is the
kinetic energy of the child at the bottom of the incline?

Answer 252

150 Joules

Question 253

What term is used in zoology to describe any appendage adapted for seizing, grasping, and holding on, especially
in reference to the tails of monkeys?

Answer 253

Prehensile

Question 254

How many grams of sodium hydroxide are found in 400 milliliters of a 0.25M solution?

Answer 254

4 grams

Question 255

Name the scientist who developed the three laws of planetary motion explaining the elliptical nature of planetary
revolution.

Answer 255

(Johannes) Kepler

Question 256

What is the name of the thin layer of tissue in woody stems and roots that produces new cells which differentiate
into phloem (flow-um) and xylem (zye-um)and is responsible for the annual rings of a tree?

Answer 256

vascular cambium

Question 257

What is the collision force required to bring a 1,000 kilogram car with an initial speed of 10 meters per second to a
complete stop in just 0.2 seconds?

Answer 257

50,000 Newtons

Question 258

In what energy level does a ground state electron first occupy an “f” orbital?

Answer 258

4 (fourth)

Question 259

Suppose that a DNA segment has the following nucleotide sequence: CTC ATA CGA. What nucleotide sequence
would be found in a complementary messenger RNA strand?

Answer 259

GAG UAU GCU

Question 260

Name three of the twelve men to have walked on the moon.

Answer 260

Armstrong, Aldrin, Bean, Cernan, Conrad, Duke, Irwin, Mitchell, Schmitt, Shepard, Scott, Young

Question 261

Calculate the displacement of a car which traveled 500 meters to the west and then traveled back 200 meters to the
east.

Answer 261

300 meters west (must include west in answer)

Question 262

Beginning with blood in the right atrium, name, in the order the blood passes through them, the four valves in the
human heart.

Answer 262

Tricuspid, Pulmonary (or Pulmonic or pulmonary semilunar), Mitral (or Bicuspid), Aortic
(answers must be given in that order)

Question 263

What rule states that for orbitals of equal energy, each orbital receives a lone electron before the electrons begin to
pair up?

Answer 263

Hund’s (Rule)

Question 264

Using 10 meters per second squared as the acceleration of gravity, a ball rolls off a wall that is 0.8 meters high,
striking the floor 0.13 meters away from the base of the wall. How long does it take for the ball to reach the ground?

Answer 264

0.4 seconds

Question 265

What is the idea that genotype frequencies in a population tend to remain the same from generation to generation
unless acted on by outside influences?

Answer 265

Hardy-Weinberg Principle (accept Hardy-Weinberg, or Hardy-Weinberg equilibrium)

Question 266

What name is given to the unsuccessful 1961 attempt by American-backed Cuban exiles to invade Cuba and
overthrow the Castro regime?

Answer 266

The Bay of Pigs (Invasion)

Question 267

What Queen of England was also a child of King Ferdinand and Queen Isabella of Spain?

Answer 267

Catherine of Aragon, (one of King Henry VIII’s wives)

Question 268

What Supreme Court litigant won his case against the state of Arizona in 1966 and thereby codified the right of
defendants to be made fully aware of their legal rights prior to questioning by police?

Answer 268

(Ernesto) Miranda

Question 269

What term describes organs or structures that seemingly no longer have a function but exist because they have
been inherited?

Answer 269

vestigal

Question 270

Name the theory that states that the current geologic processes of the Earth have always existed and account for all
of Earth’s geologic features.

Answer 270

Uniformitarianism

Question 271

What is the term used to describe covalent bonds that do not involve equal sharing of electrons?

Answer 271

polar or polar covalent

Question 272

What term best describes the concept that individuals with beneficial adaptations will tend to produce more offspring?

Answer 272

natural selection

Question 273

Give the oxidation number for oxygen in hydrogen peroxide.

Answer 273

negative 1

Question 274

How much applied force, in Newtons, does it take to move a 10-kilogram mass accelerating at 5 meters per second
squared, when friction exerts a 20 Newton force in the opposite direction?

Answer 274

70 Newtons

Question 275

Name the principle that explains both the lift of an airplane and the curving of a baseball.

Answer 275

Bernoulli’s (Principle)

Question 276

In an eclipse, what term do astronomers use to refer to the space of partial illumination between the perfect shadow
and full light?

Answer 276

Penumbra

Question 277

The arrectores (a-rek-tor) pilorum (pie-lure-um) are small muscles attached to the hair follicles of mammals. When
these muscles contract what phenomenon occurs?

Answer 277

goose bumps (also accept goose flesh or goose pimples)

Question 278

A steady current of 0.5 amps flows through a wire. How much charge passes through the wire in one minute?

Answer 278

30 coulombs

Question 279

What is the name given to the temperature and pressure at which the three phases (gas, liquid, and solid) of that
substance coexist in thermodynamic equilibrium?

Answer 279

triple point

Question 280

What two nucleic acids are involved in translation?

Answer 280

mRNA and tRNA (messenger RNA and transfer RNA)

Question 281

What’s the name of the diagram or table used to predict the outcome of a particular cross in an offspring experiment?

Answer 281

Punnett Square

Question 282

Iron three oxide (Fe-2-O-3) reacts with carbon monoxide (C-O) to produce iron (Fe) and carbon dioxide (C-O-2). In
this reaction, what compound contains an element that is reduced?

Answer 282

iron three oxide or Fe-2-0-3

Question 283

In 1957, Dr. Roger Revelle wrote that mankind is inadvertently conducting a great geochemical experiment by
releasing vast amounts of carbon dioxide into the atmosphere. This was the first formal warning about what effect?

Answer 283

greenhouse (effect)

Question 284

Give the term for the division of members of the same species into specialized work functions which the honey bee
exhibits.

Answer 284

polymorphism

Question 285

What is the oxidation number for sulfur in the sulfate ion?

Answer 285

plus 6 or positive 6 or 6

Question 286

Which type of sound waves have frequencies above 20,000 hertz?

Answer 286

Ultrasonic (sound waves)

Question 287

Melatonin is a hormone that helps regulate circadian rhythms in organisms, specifically under low ambient light
levels. Which gland synthesizes and secretes melatonin?

Answer 287

Pineal (Gland)

Question 288

The volcano, Olympus Mons, is located on which planet in our Solar System?

Answer 288

mars

Question 289

Two resistors with the values of 6.0 ohm and 12 ohm are connected in parallel. This combination is connected in
series with a 4.0 ohm resistor. What is the equivalent resistance of this combination?

Answer 289

8.0 ohm

Question 290

Name the phylum that includes species having an exoskeleton, a segmented body, and jointed appendages.

Answer 290

Arthropoda

Question 291

A motorboat traveling 4 meters per second East encounters a current traveling 3.0 meters per second North. What
is the magnitude of the resultant velocity of the motorboat?

Answer 291

5 m/s

Question 292

If an object has a density of 1/5 (one-fifth) grams per milliliter and a mass of 7 grams, what is its volume?

Answer 292

35 centimeters cubed or 35 milliliters

Question 293

The electron transport chain in photosynthesis pumps hydrogen ions from the stroma of the chloroplast into which
region?

Answer 293

Thylakoid Space

Question 294

How many electrons are in an oxide ion?

Answer 294

10

Question 295

What type of coal has the highest carbon content, the fewest impurities, and the highest calorific content of all the
types of coal?

Answer 295

anthracite

Question 296

Give the name of the ecological principle which states that no two organisms in the same ecosystem can occupy the
same niche.

Answer 296

The Competitive Exclusion (Principle) or Gause’s Law

Question 297

Give the chemical formula for ammonium phosphate.

Answer 297

(NH4)3 PO4 (read as parentheses N-H-4 close parentheses-3 P-O-4)

Question 298

A rabbit runs 4 meters from its burrow to some tasty clover. It scampers back to its burrow when it spies a hawk.
What was the rabbit’s displacement for its outing?

Answer 298

zero meters

Question 299

During what stage of mitosis does the nuclear envelope and nucleolus disintegrate and the chromatin change into
chromosomes?

Answer 299

prophase

Question 300

A ball is dropped from a tower that is 70.0 meters high. Using 10 meters per second squared as the acceleraton due
to gravity, how far will the ball fall in 3 seconds?

Answer 300

45 meters

Question 301

What term best describes a large volcanic depression?

Answer 301

caldera

Question 302

Name the three domains of life used in the modern system of taxonomic classification.

Answer 302

Archaea (are-key-a, Bacteria, Eukarya (you-carry-a)

Question 303

What is the net ionic equation when silver nitrate reacts with potassium chloride?

Answer 303

Ag plus and Cl minus yields AgCl
(also accept Ag plus 1 plus Cl minus 1 gives AgCl)
(also accept silver plus 1 plus chlorine minus 1 gives silver chloride)
(Ag+ + Cl- AgCl)

Question 304

The position of an object is described by the function “x of t equals 3 t squared minus 10 t plus 18” (x(t) = 3t^2 - 10t
+ 18), where x is in meters and t is in seconds. Find the velocity of the object at t = 2 seconds.

Answer 304

2 meters per second

Question 305

Using the correct number of significant digits, what is the mass of a pure substance if its density is 2.30 grams per
cubic centimeter and it takes up a volume of 25 cubic centimeters?

Answer 305

58 grams (do not accept 57.5 grams or 57.50 grams)

Question 306

Camels with one hump are known as dromedary, while camels with two humps are known as what?

Answer 306

bactrian

Question 307

What recent Mars discovery was announced by NASA on September 28, 2015, around the time of the release of the
movie, “The Martian”?

Answer 307

Liquid water [On the surface; ask to be more specific if the student just says “water.” Do not accept
the answer if the student does not state “liquid.”]

Question 308

What is the term for the maximum velocity of a falling object, obtained when the force of air resistance is equal to
the weight of the object?

Answer 308

Terminal (velocity)

Question 309

Give the name of the comet, last seen in 1986 and expected to return in 2061.

Answer 309

Halley’s (Comet)

Question 310

How many ATP molecules are produced in the Krebs cycle per one glucose molecule?

Answer 310

2

Question 311

A car’s velocity changes uniformly from 30.0 meters per second to 5 meters per second in 5 seconds. Calculate the
car’s acceleration.

Answer 311

-5 meters per second squared (m/s^2 or meters per second per second are also acceptable units)

Question 312

What is the formula for Titanium (III) oxide?

Answer 312

Ti-2-O-3 (2 and 3 are subscripts)

Question 313

What are the proteins called that cause reactions to proceed more rapidly and lower the activation energy?

Answer 313

enzymes

Question 314

Which type of ecological succession occurs after new lava covers the landscape?

Answer 314

Primary (Succession)

Question 315

Three hundred (300) milliliters of a 2.0 molar hydro-chloric acid solution is diluted to 800 milliliters. What is the
molarity of the new solution?

Answer 315

0.75 M or 0.75 molar or 0.75 moles/liter

Question 316

The current flowing through an appliance connected to a 120 volt source is 2 Amps. How many kilowatt-hours of
electrical energy does the appliance use in 4 hours?

Answer 316

0.96 kilowatt-hours

Question 317

Ammonia is SP3 hybridized, but is pyramidal instead of tetrahedral. What causes this structure change?

Answer 317

free electron pair or lone pair

Question 318

In kilogram-meters per second, what is the momentum of a 10-gram housefly traveling at 5 meters per second?

Answer 318

0.05

Question 319

Which gland is considered the master gland of the body because it sends messages that activate other glands and
is also responsible for producing growth hormone?

Answer 319

Pituitary (gland)

Question 320

What is the oxidation number of nickel in nickel two carbonate, NiCO3 (pronounced Ni - C - O - 3)?

Answer 320

+2

Question 321

What are the names of the two groups into which seed plants can be classified?

Answer 321

gymnosperms and angiosperms

Question 322

What is the result of very massive stars collapsing in on themselves due to the massive gravity they create?

Answer 322

Black hole

Question 323

Give the name of the biological class that includes the sharks, rays, and skates.

Answer 323

Chondrichthyes (pronounced can drik the ez)

Question 324

What term is given to two or more compounds that have the same composition but a different arrangement of atoms?

Answer 324

Isomers or structural isomers

Question 325

A car initially traveling 5 meters per second accelerates at a rate of 2 meters per second squared for a total of 15
seconds. What is the final speed of the car?

Answer 325

35 m/s (meters per second)

Question 326

What is the name of the process in which organisms with specific traits are intentionally bred to produce offspring
with identical traits?

Answer 326

artificial selection

Question 327

Name the planet which has an axis that is almost horizontal to the sun.

Answer 327

Uranus

Question 328

Name the physical measurement which is represented by the slope of a velocity vs. time graph.

Answer 328

acceleration

Question 329

Give the common name of the compound SnO2.

Answer 329

Tin four Oxide or Stannic oxide
[Do not accept Tin Oxide, Tin (II) Oxide, Stannous Oxide, or anything Oxygen.]

Question 330

Assuming acceleration due to gravity to be 10 meters per second squared, how long would it take for an object to
hit the ground if it were dropped from a height of 45 meters?

Answer 330

3 seconds

Question 331

Which force is caused by the net movement of water into or out of a cell?

Answer 331

osmotic pressure

Question 332

In valence-bond theory, what is the term for the blending or mixing of atomic orbitals?

Answer 332

Hybridization or hybrid orbitals or orbital hybridization

Question 333

This organelle in eukaryotic cells contains powerful digestive enzymes.

Answer 333

lysosome

Question 334

Name two of the three basic types of magma found on Earth.

Answer 334

Basaltic, Andesitic, and Rhyolitic or (basalt, andesite, and rhyolite)

Question 335

What is the primary root found in some plants that grows longer and thicker than the rest and carries nutrients to
the above-ground biomass?

Answer 335

Taproot

Question 336

In 1926, using an eight-sided rotating mirror placed on Mount Wilson in California, and another stationary mirror on
Mount San Antonio, Albert Michelson was the first to accurately calculate what?

Answer 336

The speed of light

Question 337

To the nearest gram, how much water would be produced if 14.0 grams of hydrogen reacted with excess oxygen?

Answer 337

126 grams

Question 338

What is an extra chromosomal piece of DNA in eukaryotic (pronounced “you -carry - otic”) cells that often codes
for antibiotic resistance?

Answer 338

plasmid

Question 339

What term is given to the place where fresh and salty waters meet, or where current meets the tide at the mouth of a
river?

Answer 339

estuary

Question 340

What is the term used to measure the loudness of a sound?

Answer 340

Decibel(s)

Question 341

What is the name of the original species involved in the process of succession in an ecosystem?

Answer 341

pioneer

Question 342

Calculate the centripetal force acting on a 1-kilogram object moving at 4 meters per second in a circle with a 2 meter
radius.

Answer 342

8 Newtons

Question 343

What intermolecular force of attraction exists between non-polar molecules?

Answer 343

Accept any of the following: London dispersion, Vander Waals, LDF (forces), induced dipole-induced dipole

Question 344

What term best describes the leaf-like structures attached to embryonic shoots?

Answer 344

cotyledons

Question 345

Name the word for the analysis of ores to determine the amount of precious metal contained.

Answer 345

assay

Question 346

Using whole numbers for atomic masses, what is the percent composition of carbon in C three H eight? Express
your answer as a whole number.

Answer 346

82%

Question 347

What is the term for a drug, such as an aspirin, which relieves pain by blocking the synaptic transmission of the
pain impulse?

Answer 347

analgesic

Question 348

How many 100 watt light bulbs can be lit with one megawatt of electricity?

Answer 348

Ten thousand or 10,000

Question 349

What are the two terms for lines on weather maps which represent patterns of pressure and temperature?

Answer 349

Isobars and Isotherms

Question 350

What organ has caudate (pronounced “ko date”) and quadrate (pronounced “quad rate”) lobes, receives blood via
the portal vein and is the primary site of fetal red blood cell production?

Answer 350

liver

Question 351

What is the main intermolecular force acting between water molecules?

Answer 351

Hydrogen bonding

Question 352

Astronaut Jesse is standing on a planet that has no atmosphere and an acceleration due to gravity of 10 meters per
second squared. If he throws an object straight upwards with a velocity of 30 meters per second, how long will it
take before the object returns to his hand?

Answer 352

6 seconds

Question 353

Name the products formed when combining a strong acid and a strong base.

Answer 353

Water and a salt (ionic compound)

Question 354

The plasma membrane of cells is composed of a double layer of what type of molecules?

Answer 354

Phospholipids

Question 355

Assuming the acceleration due to gravity is 10 meters per second squared, calculate the coefficient of friction for a
40 kilogram block of wood sliding across a horizontal floor at constant speed while being pulled by a force of 50
Newtons.

Answer 355

0.125 or 1/8

Question 356

What phylum of invertebrates contains the segmented worms?

Answer 356

Annelida

Question 357

(60 sec) At standard temperature and pressure what would be the volume of forty-eight grams of oxygen gas?

Answer 357

33.6 Liters

Question 358

Name the constellation that is comprised of the stars Deneb, Vega, and Altair?

Answer 358

Summer Triangle

Question 359

(30 sec) A car travelling 23 meters per second accelerates to 32 meters per second in 3 seconds. What is the acceleration of
the car?

Answer 359

3 meters per second, per second or 3 meters per second squared

Question 360

This structure found in bacteria is a gooey layer of polysaccharides (pronounced as: “poly-sac-a-rides”) found around
the cell wall that helps the bacteria attach to surfaces and prevent it from being engulfed by white blood cells.

Answer 360

Capsule

Question 361

(30 sec) A certain substance has a half life of 1 hour. If you start with 1,000 grams of the substance, how much of the
substance in grams will you have in 5 hours?

Answer 361

31.25

Question 362

What kind of star has used up most of its hydrogen and has expanded?

Answer 362

Red Giant

Question 363

What is the process by which oxygen-lacking cells and some single-celled organisms release small amounts of energy
from glucose molecules and produce wastes such as alcohol, carbon dioxide, or lactic acid?

Answer 363

fermentation

Question 364

(30 sec) What is the centripetal force acting on a 6 kilogram object traveling at 4 meters per second around a circle of radius 3
meters?

Answer 364

32 Newtons

Question 365

(30 sec) To the nearest whole number, what is the percentage of oxygen in water?

Answer 365

89%

Question 366

What is the stage of mitosis when the centromeres that held the twin chromatids together break apart, moving toward
opposite ends of the spindle?

Answer 366

anaphase

Question 367

(30 sec) In miles, what is the magnitude of the displacement of a cyclist who rides 5 miles east then 12 miles south?

Answer 367

13

Question 368

Bailey’s beads occur at the start and end of the totality phase of what events?

Answer 368

(total) solar eclipses

Question 369

What law states: “For a mixture of gasses in a container, the total pressure exerted is the sum of the pressures that
each gas would exert if it were alone”?

Answer 369

Dalton’s Law of Partial Pressures or Dalton’s Law

Question 370

What is the name for the body system that contains skin, hair, and nails?

Answer 370

Integumentary (system)

Question 371

(30 sec) How many decimeters are in 8.53 kilometers?

Answer 371

85,300

Question 372

Give the term for the inactive state of arrested development that insects undergo to survive the winter.

Answer 372

diapause

Question 373

(30 sec) What is the oxidation number of sulfur in H 2 S O 4?

Answer 373

plus six OR six plus

Question 374

Name the 3 most common sedimentary rocks in the state of Kansas.

Answer 374

Limestone, shale, sandstone

Question 375

What is the process in which primary consumers use oxygen to release energy from carbohydrates and create carbon
dioxide as a byproduct?

Answer 375

(Cellular) Respiration

Question 376

(30 sec) A simple circuit consists of a battery linked to four resistors, in series, whose resistances are 3, 5, 7, and 9 ohms.
The current through the circuit is 5 amperes. What is the voltage delivered by the battery?

Answer 376

120 volts

Question 377

What are the three methods of heat transfer?

Answer 377

Conduction, Convection and Radiation

Question 378

(30 sec) Members of the Nitrogen Family have three “p” electrons in the highest energy level. How many full “p” orbitals
do they possess?

Answer 378

zero

Question 379

What class of biological macromolecule is responsible for storing and communicating genetic information?

Answer 379

nucleic acids

Question 380

Give the term for a satellite whose orbit is maintaining its position over the same spot on the earth.

Answer 380

geosynchronous or geostationary

Question 381

(30 sec) If 32% of a sample of DNA is Guanine (pronounced Gwa-nene), how much of the sample is Thymine (pronounced
Thy-mene)?

Answer 381

18%

Question 382

(60 sec) Find the volume in liters, at STP, of 144 grams of sulfur dioxide gas.

Answer 382

67

Question 383

Kilauea and Mauna Loa are both examples of what type of volcano, characterized by slow, constant eruptions of
basaltic lavas.

Answer 383

Shield Volcano

Question 384

Often written as “C1,” this small vertebrae does a great job of “holding up” our skull.

Answer 384

Atlas

Question 385

(30 sec) What is the wavelength of a wave that has a frequency of 10 Hertz and a wave speed of 35 meters per second?

Answer 385

3.5 meters

Question 386

What is the common name of the calcaneous bone?

Answer 386

The heel (bone)

Question 387

(30 sec) If Bob does 405 Joules of work over a distance of 15 meters, how large a force does he exert?

Answer 387

27 Newtons

Question 388

Which formula has the lowest whole number ratio of elements in a compound?

Answer 388

Empirical (formula)

Question 389

What is the haploid number of chromosomes for Homo sapiens?

Answer 389

23

Question 390

(60 sec) What is the centripetal acceleration of an object moving along a horizontal circular path of 16 meters radius with a
speed of 40 meters per second?

Answer 390

100 meters per second squared or 100 meters per second per second

Question 391

What term refers to the substance remaining after water has been removed by heating a compound such as C U S O 4
dot 5 H 2 O?

Answer 391

anhydrous

Question 392

The process of water leaving the leaves of a plant is called?

Answer 392

Transpiration

Question 393

Name the S.I. unit used to measure the intensity of light?

Answer 393

Candela

Question 394

Which principle states that it is impossible to determine simultaneously both the position and velocity of an electron
or any other particle?

Answer 394

Heissenberg uncertainty (principle)

Question 395

What seismic waves can penetrate the Earth’s core?

Answer 395

P (waves)

Question 396

(60 sec) How many grams of oxygen gas, combining with an excess of hydrogen gas, would be required to produce 36 grams
of water?

Answer 396

32

Question 397

What biological principle states that the genes of a pair are separated during gamete formation?

Answer 397

segregation

Question 398

What is equal to the difference between the potential energy of the products and the potential energy of the reactants in
a chemical reaction?

Answer 398

Heat of reaction

Question 399

Name any two of the three proteins found in plasma.

Answer 399

Fibrinogen, (serum) albumin, (serum) globulin

Question 400

(30 sec) What is the mechanical advantage of a simple machine if it can lift a 40 Newton crate with an input force of only 10
Newtons?

Answer 400

4

Question 401

What term refers to the natural phenomenon in which a warm, usually coastal wind, drastically raises temperatures in
interior land regions, especially in the Pacific Northwest?

Answer 401

Chinook (chinook wind)

Question 402

What are animals with mouths that develop from or near the blastopore called?

Answer 402

protostomes

Question 403

( 30sec) What is the final speed of a car that is initially traveling at 10 meters per second if it speeds up at a rate of 3 meters
per second squared for a period of 15 seconds?

Answer 403

55 meters per second

Question 404

Water forms a meniscus when placed in a graduated cylinder. What name is given to the attractive force between the
water and the graduated cylinder?

Answer 404

adhesion

Question 405

Which vascular system in plants transports water and minerals?

Answer 405

xylem

Question 406

What is the SI prefix for ten to the negative fifteenth?

Answer 406

femto

Question 407

What large moon of Jupiter is the outermost of the Galilean satellites?

Answer 407

callisto

Question 408

The beta decay of unstable carbon-14 results in the formation of which element?

Answer 408

nitrogen

Question 409

What is the term given to the wavelike, rhythmical contractions of the human digestive system which push food
through the digestive tract?

Answer 409

peristalsis

Question 410

What name is given to weak sub-atomic particles that have no charge and can pass through ordinary matter almost
unaffected?

Answer 410

Neutrinos

Question 411

Who was the geneticist who received a Nobel Prize at age 81 for her work completed thirty years earlier on “jumping
genes” such as in the African violet plant?

Answer 411

Barbara McClintock

Question 412

Whose first law states that planets orbit the Sun along elliptical paths?

Answer 412

kepler

Question 413

What specific material are the polar caps of Mars composed?

Answer 413

Dry ice (frozen carbon dioxide)

Question 414

What is the term for the type of intermediate inheritance where both alleles in the heterozygote express themselves
fully?

Answer 414

codominance

Question 415

What are the two basic types of friction?

Answer 415

kinetic and static

Question 416

(30 sec) How many atoms of oxygen are there in one formula unit of Calcium Nitrate?

Answer 416

6

Question 417

What is a thermodynamic process called in which the pressure remains constant?

Answer 417

isobaric

Question 418

Which freshwater zone is known for its close proximity to the shore, abundant producers like aquatic plants and
algae, and high levels of photosynthesis?

Answer 418

littoral zone

Question 419

What is the term for the observed motion of certain planets which move eastward, slow to a stop, then move
westward over several days when viewed against the background of fixed stars.

Answer 419

Retrograde (motion)

Question 420

Name the enzyme which unwinds a DNA molecule during replication.

Answer 420

helicase

Question 421

(60 sec) If 90 milliliters of water is decomposed into hydrogen and oxygen, to the nearest gram, how much hydrogen is
produced?

Answer 421

10

Question 422

(30 sec) A rocket starting from rest experiences an acceleration of 4 meters per second squared. What is its speed after 5.5
seconds?

Answer 422

22 m/s

Question 423

What chemical compound is the product of glucose being oxidized during glycolysis?

Answer 423

Pyruvic acid or pyruvate

Question 424

What word is used in conjunction with the words cloud, event, or flow to describe a fragment of solidified lava.
Answer: pyroclast

Answer 424

pyroclast

Question 425

Name the waxy covering of a placental embryo that protects it from the amniotic fluid.

Answer 425

vernix

Question 426

Which scientist published a theory of atomic structure in 1913 which described electron arrangement in atoms?

Answer 426

Niels Bohr

Question 427

(30 sec) A couch is pushed with a force of 75 Newtons and moves a distance of 5 meters across the floor. How much work is
done in moving the couch?

Answer 427

375 Joules
or
375 Newton meters

Answer 428

(micro)villi

Question 429

(30 sec) Solve the ideal gas law for the number of moles.

Answer 429

n=PV/RT or moles equal pressure times volume divided by gas constant times temperature

Question 430

What is the SI unit of magnetic field?

Answer 430

Tesla

Question 431

Name the vascular tissue in plants that is responsible for moving water and dissolved minerals upward from the
roots to the rest of the plant body.

Answer 431

xylem

Question 432

(30 sec) If the pH of a solution is 6, what is the pOH?

Answer 432

8

Question 433

(45 sec) Two charges are separated by 10 centimeters with 2 Newtons of attractive force. What is the magnitude of the force
when the charges are separated by 5 centimeters?

Answer 433

8 Newtons

Question 434

What scientific naming system for plants and animals, devised by Swedish botanist Carolus Linnaeus, calls
organisms by their genus and species?

Answer 434

binomial nomenclature

Question 435

What type of weather front forms a boundary between cold and warm air masses that are not advancing?

Answer 435

Stationary front

Question 436

(30 sec) A radioisotope has a 5-year half-life. After 15 years, what fraction of the original isotope remains?

Answer 436

1/8 (one-eighth), Accept 12.5% or 0.125

Question 437

In the endosymbiotic theory, which two organelles were once free-living prokaryotes that were engulfed by larger
cells to form a symbiotic relationship?

Answer 437

Choroplasts and Mitochondria

Question 438

(60 sec) What is the distance traveled, in meters, of a plane that starts from rest and accelerates at the rate of 10 meters per
second squared for 8 seconds?

Answer 438

320 meters

Question 439

What is the term for the electrons involved in metallic bonding that are free to move easily from one atom to the next
throughout the metal and are not attached to a particular atom?

Answer 439

delocalized (or delocalized electrons)

Question 440

Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with
very large, complex undigested lipids. Which cellular organelle’s function is affected in this condition?

Answer 440

lysosome

Question 441

What is the name of the astrophysicist who was influenced by Carl Sagan and hosts the latest version of Cosmos:
A Spacetime Odyssey?

Answer 441

(Neil deGrasse) Tyson

Question 442

(30 sec) What is the momentum of a bowling ball with a mass of 6 kilograms traveling at a velocity of 1.5 meters per second?

Answer 442

9 kilograms meters per second or 9 Newton seconds

Question 443

What term refers to a plant that grows harmlessly on another plant and absorbs nutrients and moisture from rain
and debris accumulating around it?

Answer 443

Epiphyte

Question 444

(30 sec) What is the specific heat of a substance if 200 Joules of energy is required to change 10 grams of it through a
temperature change of 10 Kelvin?

Answer 444

2 Joules per gram Kelvin

Question 445

What chemical principle states electrons fill orbitals of lower energy before filling orbitals of higher energy?

Answer 445

Aufbau Principle or Aufbau

Question 446

This membrane-bound organelle is responsible for the production of lipids and detoxification, and can be found in
large quantities in the liver.

Answer 446

Smooth Endoplasmic Reticulum (Smooth ER)

Question 447

(30 sec) How many liters of 0.5 Molar HCl solution would be required to neutralize 10 liters of 0.2 Molar NaOH solution?

Answer 447

4 (liters)

Question 448

Beyond the Kuiper belt, at the edge of our solar system, what is the name of the great reservoir of comets called?

Answer 448

Oort cloud

Question 449

What is the term used to describe the rhythmic muscular contractions that move food through the digestive tract?

Answer 449

Peristalsis

Question 450

In order for a redox reaction to occur spontaneously, what would be the sign of the calculated voltage of the cell?

Answer 450

Positive

Question 451

Given that the speed of sound is 330 meters per second, what is the speed in meters per second of a jet traveling at
Mach [“mock”] 3?

Answer 451

990

Question 452

Name the type of population growth which can occur if resources are unlimited and all individuals are reproducing
at a constant rate.

Answer 452

Exponential Growth (exponential)

Question 453

Which term designates a pile of debris deposited by a glacier or ice sheet?

Answer 453

moraine

Question 454

What are 3 of the 4 fundamental forces in physics?

Answer 454

Gravity, Electromagnetic, Strong (nuclear) and Weak (nuclear).
(accept Electro and magnetic force as electromagnetic (as 1 force)

Question 455

If the specialized area of the cerebral hemisphere corresponding to Broca’s area is damaged, what area of
functionality is hindered as a result?

Answer 455

speech

Question 456

(60 sec) Gina bikes 4 miles at 8 miles per hour, then walks 2 miles at 5 miles per hour. What was Gina’s average speed?

Answer 456

6 2/3 miles per hour, also accept 6.66 miles per hour or 20/3 miles per hour

Question 457

According to VESPR (vesper) theory, what is the molecular shape of methane?

Answer 457

tetrahedral

Question 458

teria break down nitrates and release nitrogen gas back into the atmosphere.

Answer 458

Denitrification

Question 459

What is the name of the aquifer from which most of Western Kansas receives water?

Answer 459

Ogallala Aquifer (accept Ogallala)

Question 460

(30 sec) How many milliters of water must be added to dilute 100 milliliters of a 2 molar solution to a 0.5 molar solution?

Answer 460

300 (milliliters)

Question 461

Occurring in “wet” and “dry” forms, this is a medical condition which usually affects older adults and results in a
loss of vision in the center of the visual field because of damage to the retina.

Answer 461

Aged-related Macular Degeneration (AMD or macular degeneration)

Question 462

(30 seconds) What is the momentum of a car with a mass of 1,300 kilograms traveling at a speed of 28 meters per second?

Answer 462

36, 400 kilogram meters per second

Question 463

What term describes maximum departure of a wave from its average position?

Answer 463

amplitude

Question 464

Name the measure of the ability of an atom in a chemical compound to attract electrons.

Answer 464

electronegativity

Question 465

What anatomical structure in the human body serves to assure equal air pressure on both sides of the ear drum?

Answer 465

Eustachian tube

Question 466

(30 sec) Three resistors of two ohms each are connected in a series to a 12-volt battery. What is the current through the
circuit?

Answer 466

2 amps

Question 467

Name the scientific study of landforms and the processes that shape them.

Answer 467

Geomorphology

Question 468

What is the largest animal from the cat family found in southwestern United States, Mexico, Central America, and
South America?

Answer 468

Jaguar

Question 469

(30 sec) What is the frequency of a sound wave with a wavelength of 0.5 meter and a wave speed of 300 meter per second?

Answer 469

600 Hertz or (inverse second)

Question 470

(30 sec) Give the total number of atoms in the formula of aluminum carbonate.

Answer 470

14 atoms

Question 471

Name the diagram that shows stars and their relationships between absolute magnitudes or luminosities versus their
spectral classifications or effective temperatures.

Answer 471

Hertzsprung-Russell Diagram or H-R Diagram

Question 472

Name the following compound: N2O5 (read N-2-O-5).

Answer 472

Dinitrogen Pentoxide

Question 473

During DNA replication what are the small pieces of “disjointed” DNA called on the lagging strand?

Answer 473

Okazaki Fragments

Question 474

(30 sec) What precipitate forms when zinc chloride reacts with sodium hydroxide?

Answer 474

Zinc hydroxide (accept zinc-2-hydroxide)

Question 475

What are the four nitrogenous bases that make up the base pairs in DNA?

Answer 475

Adenine, Thymine, Cytosine, and Guanine

Question 476

How many different isomers are possible for a hydrocarbon with the molecular formula C 4 H 10?

Answer 476

2

Question 477

(30 sec) A car is pushed with a force of 2550 Newtons and accelerates to the right at 3.4 meters per second squared. What is
the mass of the car?

Answer 477

750 kilograms

Question 478

(30 sec) If two displacement vectors of 6 meters and 8 meters (with varying directions) are added together, then the resultant
magnitude could range anywhere between what two meter measurements?

Answer 478

2 and 14 (meters)

Question 479

What are the two protein myofibrils that make up filaments of a muscle?

Answer 479

Actin and myosin

Question 480

Identify the network of vesicles found in the cytoplasm of many cells and used in the production of proteins and
carbohydrates.

Answer 480

Golgi apparatus or Golgi complex or Golgi body or Golgi

Question 481

What term best describes the chemical and physical process that transforms sediments into rock?

Answer 481

lithification

Question 482

What name is given to photosynthetic or chemosynthetic organisms which make up the base of a food chain or
ecological pyramid?

Answer 482

primary producers

Question 483

Name the property of a mineral that describes how light is reflected from its surface.

Answer 483

Juster

Question 484

(30 sec) What is the pH of a solution with hydroxide ion concentration of ten to the minus 10?

Answer 484

4

Question 485

(45 sec) Find the equivalent resistance of a circuit having four resistors in parallel containing one 15 ohm, one 5 ohm, and
two 30 ohm resistors.

Answer 485

3 Ohms

Question 486

What is the chemical substance produced by some insects to communicate and attract mates?

Answer 486

Pheromone

Question 487

(45 seconds) How many moles of sugar are required to make 4 Liters of a saturated solution having a concentration of 0.6 molar?

Answer 487

2.4

Question 488

What is the name of the compound from which limestone is made?

Answer 488

Calcium Carbonate

Question 489

What is the VSEPR (vesper) shape of sulfur hexafluoride?

Answer 489

Octahedral

Question 490

(30 seconds) In terms of g, what is the acceleration due to gravity on a planet with twice the radius and twice the mass of Earth?

Answer 490

0.5g or one-half g

Question 491

Name the ecological process which describes a predictable series of changes that an ecosystem will go through
following a disturbance such as a fire, flood, or volcanic eruption.

Answer 491

Ecological Succession (also accept “Succession”)

Question 492

(30 sec) A platform diver weighs 500 Newtons. She steps off a diving board that is elevated to a height of 10 meters above
the water. How many Joules of kinetic energy will the diver possess just as she hits the water?

Answer 492

5000 Joules or 5000 Newton-meters

Question 493

Name the yellowish liquid that is excreted from the mammary gland as a precursor to breast milk.

Answer 493

Colostrum

Question 494

What do we call the ratio of the air’s actual water-vapor content compared to the amount of water vapor that air can
hold at a specific temperature and pressure?

Answer 494

relative humidity

Question 495

Name the term that refers to an increased amount of nutrients that have been added to natural waterways through
natural processes or human activities.

Answer 495

Eutrophication

Question 496

How many electrons are required to fill a f sublevel?

Answer 496

14

Question 497

In what layer of the earth’s atmosphere does the majority of weather occur?

Answer 497

Troposphere

Question 498

(30 sec) How many lone pairs of electrons are located on the oxygen atom of a water molecule?

Answer 498

2

Question 499

(30 sec) A teeter totter has 180 pounds placed four feet from the fulcrum. How many pounds must be placed six feet from the
fulcrum on the other side to achieve balance?

Answer 499

120 pounds

Question 499

If a parent with a homozygous dominant gene pair for a trait is crossed with a parent with the recessive phenotype, what is the phenotypic ratio in the F one generation?

Answer 499

4:0 (accept 4 to zero or zero to four)

Question 500

What term describes a plant’s tendency to grow towards a light source?

Answer 500

phototropism (phototropic)

Question 501

What is the oxidation number of nitrogen in nitrous acid?

Answer 501

+3 (plus 3)

Question 502

(60 sec) Using an acceleration of gravity of 10 meters per second squared, what is the power output of a 68.8 kilogram
student who runs up a flight of stairs that is 3.4 meters tall in a time of 2.34 seconds?

Answer 502

1000 watts or accept 999.6 watts or any correct rounding of 999.6 watts

Question 503

What effect describes the ejection of electrons from a metal surface when light falls on it?

Answer 503

Photoelectric

Question 504

(60 seconds) What is the distance in centimeters of an image created using a convex lens that has a focal length of 12 centimeters with an object distance of 60 centimeters?

Answer 504

15

Question 505

What term best describes the group of snakes that wrap their bodies around their prey and gradually squeeze until
the prey suffocates?

Answer 505

constrictors

Question 506

In chemistry, what letter represents the principal quantum number?

Answer 506

n

Question 507

(45 sec) Given the law of conservation of momentum, what is the velocity of a 500 kilogram cannon after it has fired a 10
kilogram cannon ball at a velocity of 50 meter per second?

Answer 507

negative one meter per second

Question 508

What chemical law states that when two elements combine to form more than one compound, they are in a simple whole number ratio to one another?

Answer 508

(law of) multiple proportions

Question 509

What is the term for the maximum number of a given species that an ecosystem can sustain at any given time?

Answer 509

carrying capacity

Question 510

Meaning “acid loving,” what variety of bacteria is commonly used to transform milk into yogurt?

Answer 510

Acidophilus

Question 511

Give the term for the point in the orbit of a planet, asteroid, or comet at which it is closest to the sun.

Answer 511

perihelion

Question 512

What form of energy is used by a cell during active transport to accomplish the task of molecules moving from a point of lower concentration to a point of higher concentration?

Answer 512

ATP (adenosine triphosphate)

Question 513

What is the electron configuration for a fluoride ion which has an atomic number of 9?

Answer 513

1s2 2s2 2p6

Question 514

What is the term for an open-chain hydrocarbon in which a triple bond between at least one pair of carbon atoms is
present?

Answer 514

alkyne (pronounced al-kine) Do not accept al-kane or al-keen

Question 515

(30 sec) What would be the power rating of a 120-volt heater when it draws 12.0 amperes of current?

Answer 515

1440 watts or 1.44 kilowatts

Question 516

What are the three shapes of galaxies as classified by Hubble?

Answer 516

Spiral, irregular, elliptical

Question 517

Name the system that is related to instinct, emotions and mood and involves the hippocampus, hypothalamus,
thalamus, and parts of the cerebral cortex.

Answer 517

Limbic system

Question 518

Give the chemical formula for chromium (II) nitrite (chromium 2 nitrite).

Answer 518

Cr(NO2)2(“Cr parentheses N-O-2 close parentheses two”)

Question 519

(30 sec) What is the current flowing through a circuit with 20 ohms of resistance and a 12-volt power supply?

Answer 519

0.6 amperes [accept 3/5 ampere, unit can be expressed as “amps”]

Question 519

What is the term for cells that have two sets of chromosomes?

Answer 519

Diploid

Question 520

(30 seconds) To the nearest whole number, what is the mass, in grams, of one mole of glucose with a formula of C 6 H 12 O 6?

Answer 520

180

Question 521

Which one of the four fundamental forces of the universe is most directly involved with maintaining the planets in
their orbits?

Answer 521

Gravity

Question 522

Name two of the four factors that affect the size of a population.

Answer 522

(any two) birthrate, mortality rate (death rate), immigration, emigration

Question 523

(30 seconds) What is the coefficient of kinetic friction between a 20 Newton block and a table if it takes 5 Newtons to pull it at a constant speed?

Answer 523

0.25 (must be expressed as a decimal, do not accept 1/4)

Question 524

(30 sec) The force of gravitational attraction between 2 steel balls is 5 Newtons. If both masses double and the radius
doubles, what is the new gravitational force of attraction?

Answer 524

5 Newtons

Question 525

Give the name of the fatty layer of insulation surrounding the axons of many nerve cells which functions to speed
up the transmission of nerve impulses.

Answer 525

myelin (or myelin sheath)

Question 526

Name the scientific principle which states only two electrons can occupy a given orbital, and both must have
opposite spins.

Answer 526

The Pauli (or Exclusion)(Principle)

Question 527

Which land biome contains the greatest species diversity?

Answer 527

Tropical Rain Forest (prompt for additional information if student says rain forest)

Question 528

“Magnetars,” “accretation-powered,” and “rotation-powered” are three categories of what type of neutron star that periodically emits radiation?

Answer 528

Pulsar

Question 529

With a hardness of 6 on the Moh’s Scale of Hardness, give the term for the group of closely related minerals that
make up the majority of the earth’s crust.

Answer 529

Feldspar(s)

Question 530

(30 sec) How many times more acidic is a solution with a pH of 5 compared to a solution with a pH of 8?

Answer 530

1,000 (times) (also accept 10^3)

Question 531

What term describes a plant’s tendency to grow towards a light source?

Answer 531

Phototropic (or phototropism)

Question 532

Some people feel an improvement in their health after taking a remedy that has no proven scientific effect on health
status. What is the effect called?

Answer 532

Placebo (effect)

Question 533

(30 sec) How many Joules are in one watt-hour?

Answer 533

3600 joules

Question 534

(60 seconds) How far does a car travel if it speeds up from rest at a rate of 4 meters per second squared for a period of 5 seconds?

Answer 534

50 meters

Question 535

(30 sec) What would be the mass number of the radon produced when radium 226 undergoes alpha decay?

Answer 535

222

Question 536

(30 seconds) How much current is flowing through a 60 watt light bulb if it is connected to a 120 volt supply?

Answer 536

0.5 amps or amperes

Question 537

If a father is heterozygous for brown eyes and the mother has blue eyes, what is the probability their child will have
blue eyes?

Answer 537

50% or 1/2 or 1:2

Question 538

What term is used to describe the path a projectile follows as it travels through space?

Answer 538

Trajectory

Question 539

What is the name of the electromagnetic light show that lights up the Antarctic?

Answer 539

Aurora Australis

Question 540

(30 sec) What is the gravitational potential energy of a 5 kilogram object dropped from a height of 3 meters above the
surface of Mars where the gravity is 3.7 meters per second squared?

Answer 540

55.5 Newtons or 55.5 kilograms meters per second squared

Question 541

What is the ion that attaches to troponin to allow for muscle cell contraction?

Answer 541

Calcium or Calcium plus 2

Question 542

Give the oxidation number for nitrogen in the compound dinitrogen trioxide.

Answer 542

+3

Question 542

Name the common metallic element of the alkaline-earth group that burns in air with an intense white flame as used in flashbulbs, pyrotechnics, and incendiaries.

Answer 542

Magnesium

Question 543

What is the most common term used in genetics to describe the observable physical characteristics of an organism
caused by the expression of a gene or set of genes?

Answer 543

phenotype

Question 544

If a cell shrinks when placed in a solution, what type of solution was it placed in?

Answer 544

hypertonic

Question 545

(60 sec) Calculate the mass of copper, to the hundredths place, if a sample has a density of 8.94 grams per cubic centimeter
and a volume of 4 cubic centimeters.

Answer 545

35.76 grams

Question 546

What theory, widely accepted by astronomers, explains the formation of the moon?

Answer 546

Giant Impact

Question 547

Which layer of the atmosphere contains the ozone layer that prevents most of the ultraviolet radiation from reaching
the surface of the Earth?

Answer 547

stratosphere

Question 548

What is the molecular formula for perchloric acid?

Answer 548

H C L O 4

Question 549

(30 sec) What would be the starting time of a car that finished a 1400 mile trip at 8:00 a.m. if it averaged 70 mph?

Answer 549

12 noon the previous day

Question 550

What term of respiratory physiology is described by the following definition: the volume of air inspired or expired during a normal inspiration or expiration.

Answer 550

Tidal (volume)

Question 551

What does a mycophagist eat?

Answer 551

fungi or mushrooms

Question 552

What Greco-Egyptian astronomer’s geocentric theory of the universe was accepted until 1543, when Copernicus
formulated his theory that the earth is a moving planet?

Answer 552

Ptolemy.

Question 553

Identify the three products of cellular respiration.

Answer 553

ATP (energy), carbon dioxide (CO2) and water (H2O)

Question 554

What are the four fundamental forces of nature?

Answer 554

Strong nuclear, weak nuclear, electromagnetic, and gravity

Question 555

What is the heaviest naturally occurring element?

Answer 555

Uranium

Question 556

(30 sec) What is the total resistance of a parallel circuit with 2 branches, each with a 10 ohm [“ome”] resistor?

Answer 556

5 ohms

Question 557

What almond-shaped and sized portion of the brain, called the “fear center,” helps us decide whether to fight, take flight or simply be afraid?

Answer 557

Amygdala

Question 558

How many valence electrons does an atom of fluorine (atomic number 9) have?

Answer 558

7

Question 559

(30 sec) Calculate the speed, in meters per second, of an ocean wave with a frequency of 20 Hertz and a wavelength of 2.5
meters.

Answer 559

50 meters per second

Question 560

Operating on electromagnetic principles, what is the basic component of both ammeters and voltmeters?

Answer 560

Galvanometer

Question 561

According to the combined gas law, what quantity varies inversely with pressure if temperature is held constant?

Answer 561

volume

Question 562

Name the components of a cell found mainly in plants and protists, which are liquid-filled cavities enclosed by a
single membrane, and serve as storage areas for food and waste products.

Answer 562

vacuoles

Question 563

Name the scientist credited with the Law of Segregation and the Law of Independent Assortment.

Answer 563

(Gregor) Mendel

Question 564

What is the name of the human body system that circulates white blood cells?

Answer 564

Lymphatic

Question 565

Radio reception between two cities that are a great distance apart depends primarily on conditions in what layer of the atmosphere?

Answer 565

Ionosphere

Question 566

What phenomenon of light makes it possible for light to stay inside fiber optics?

Answer 566

Total internal reflection

Question 567

What term is given to the pores in leaves through which gases enter and leave?

Answer 567

Stomata

Question 568

Name the compound with the formula of Cu Cl two, dot, six H two O. (CuC12.6H2O)

Answer 568

Copper (II) chloride hexahydrate (copper two chloride hexahydrate)

Question 569

(30 sec) What is the centripetal force, in Newtons, needed to keep a 3 kilogram object in a circle with a radius of 2 meters, if
the object’s speed is 10 meters per second?

Answer 569

120 Newtons

Question 570

(60 seconds) Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 grams of dolomite contains 1.70 grams of calcium. Calculate the mass percent of calcium in dolomite to the nearest tenth of a percent.

Answer 570

21.8%

Question 571

What is the only bone in the body that does not articulate with any other bone?

Answer 571

Hyoid

Question 572

(60 sec) How many moles of oxygen are required to completely combust two moles of methane?

Answer 572

4 (moles)

Question 573

What is the only non-metal element that is liquid at room temperature?

Answer 573

Bromine

Question 574

Which scale is metered from 1 to 10 and used by geologists to determine the hardness of minerals?

Answer 574

Moh’s (Scale of Hardness)

Question 575

What type of rays have a high-frequency, travel at the speed of light and are the most penetrating form of radiation?

Answer 575

Gamma rays

Question 576

What color would be emitted from lithium during a flame test?

Answer 576

red

Question 577

What term refers to the lack of specialization or differentiation of stem cells?

Answer 577

Totipotent

Question 578

Name the protein produced by cells after they have been exposed to a virus that prevents the virus from reproducing within the infected cells.

Answer 578

Interferon

Question 579

(30 sec) Two resistors are wired in parallel. If each resistor has a rating of 6 Ohms, what is the equivalent resistance in Ohms
of the two resistors?

Answer 579

3

Question 580

What is the name of a tide with little variation between high and low tides?

Answer 580

Neap Tide

Question 581

Give the chemical name for the substance whose formula is N A 2 S O 3.

Answer 581

Sodium sulfite {sulfate is incorrect}

Question 582

(30 sec) Assuming a Hardy-Weinberg equilibrium, 20% of a population is homozygous dominant, 52% is heterozygous, and
28% is homozygous recessive. How many of the next generation is predicted to be homozygous recessive if the
population contains 1000 individuals?

Answer 582

280

Question 583

(30 seconds) What is the acceleration of a 5 kilogram object that is being pushed by a force of 35 Newtons?

Answer 583

7 meters per second squared or meters per second per second

Question 584

(30 sec) In Hertz, what are the two possible frequencies of a tuning fork that can produce a beat frequency of 2 Hertz if it is
sounded together with a tuning fork of frequency 384 Hertz?

Answer 584

382 and 386

Question 585

Name the thin sac of tough tissue that surrounds the heart.

Answer 585

pericardium

Question 586

Give the term for a laboratory technique that uses a solution of known concentration to determine the concentration of another solution.

Answer 586

titration

Question 587

(60 seconds) In a dihybrid cross between two heterozygous parents, what is the probability of obtaining an offspring that is homozygous recessive for both traits?

Answer 587

1/16

Question 588

(30 sec) What is the power in watts for a force of five newtons lifting an object six meters in two seconds?

Answer 588

15

Question 589

Measured in Farads, what quantity measures the charge stored per volt across parallel plates?

Answer 589

Capacitance

Question 590

What event follows the last phase of mitosis, completing the process of cell division?

Answer 590

Cytokinesis

Question 591

What trophoblast (pronounced as tro-fo-blast) derived structure is absent in monotremes (pronounced as mon-o-treems) and marsupials, but found in all other mammals which nourishes the fetus in utero?

Answer 591

Placenta

Question 592

What type of intermolecular force of attraction acts between two polar molecules?

Answer 592

dipole-dipole

Question 593

What rock type forms from magma cooling rapidly on Earth’s surface?

Answer 593

Extrusive Igneous Rock

Question 594

What Spanish word for “shaft or pit in a gold mine” is used in the U.S. to designate “a dry gully” or “a stream bed situated in a desert area”?

Answer 594

Arroyo

Question 595

Renal failure refers to the shut down of what organs?

Answer 595

kidney(s)

Question 596

(30 sec) What is the electron configuration for an oxide ion?

Answer 596

1s2 2s2 2p6 (reads 1s two, 2s two, 2p six)

Question 597

Name the five-carbon sugar found in both ATP and ADP.

Answer 597

Ribose

Question 598

Name the SI unit of capacitance.

Answer 598

farad

Question 599

(45 seconds) How much power is generated in lifting a box if you exert a vertical force of 92 newtons while raising it to a height of 6 meters in 3 seconds?

Answer 599

184 Watts

Question 600

What term is given to the bridge-like connection between the two cerebral hemispheres of the brain?

Answer 600

Corpus callosum

Question 601

Which two word name is given to the cluster that includes the Milky Way and 25 or more other galaxies?

Answer 601

local group

Question 602

Which German physicist’s work led him to the conclusion that matter can gain or lose energy only in small, specific amounts called quanta?

Answer 602

(Max) Planck

Question 603

What are the two types of collisions?

Answer 603

Elastic and inelastic

Question 604

What is the name of the family of elements requiring one electron to achieve a noble gas structure?

Answer 604

halogens

Question 605

In seconds, what is the period of a wave with at speed of 3 meters per second and a wavelength of 6 meters?

Answer 605

2 (seconds)

Question 606

To what class and order do bears belong?

Answer 606

(Class) Mammalia and (Order) Carnivora

Question 607

What part of the digestive tract of crustaceans, consisting of a muscular tube with sharp teeth on the inside, is used to grind hard food items?

Answer 607

The gastric mill

Question 608

What layer of the sun gives off visible light and is considered to be the surface of the sun?

Answer 608

Photoshpere

Question 609

Name the chemical bond that holds two amino acids together.

Answer 609

peptide bond or peptide

Question 610

If polonium-210 undergoes transmutation which results in lead-206, what particle is emitted?

Answer 610

Alpha (particle)

Question 611

What do we call the measure of an earthquake’s damage?

Answer 611

Intensity

Question 612

Name the class of organic acids, such as acetic (pronounced as ah-cee-tic) acid, that have the functional group C O O H.

Answer 612

Carboxylic

Question 613

What is the mass of 37 liters of water?

Answer 613

37,000 grams or 37 kilograms

Question 614

What two planets’ rotations are retrograde to their orbits?

Answer 614

Venus and Uranus

Question 615

Name the unit of kidney activity that acts as a blood filter and begins the formation of urine.

Answer 615

Nephron

Question 616

What two quantities of a planet’s orbit are related in Kepler’s 3rd law?

Answer 616

Radius and period (also accept revolution time for period)

Question 617

(30 seconds) Neglecting friction and assuming acceleration due to gravity as 10 meters per second squared, what is the acceleration in meters per second squared of a 65 kilogram skier skiing down a 30 degree slope?

Answer 617

5

Question 618

Which Kingdom includes both the giant kelp and the amoeba?

Answer 618

Kingdom Protista

Question 619

Name the thin layer of cells in a tree trunk that can divide to increase the diameter of the tree.

Answer 619

Cambium

Question 620

Name the two planets on which the atmosphere consists chiefly of carbon dioxide.

Answer 620

Mars and Venus

Question 621

(30 sec) How far, in meters, will a spring with a spring constant of 400 Newtons per meter stretch if a force of 100 Newtons is
applied?

Answer 621

0.25 (meters)

Question 622

Name the term for tough bands of tissue connecting bone to bone.

Answer 622

Ligaments

Question 623

(30 sec) How many moles are there in 54.0 Liters of nitrogen dioxide at STP?

Answer 623

2.41 moles

Question 624

Which two angles are related in Snell’s law?

Answer 624

Angle of refraction and incidence

Question 625

What organ allows bony fish to maintain buoyancy?

Answer 625

Swim bladder

Question 626

(30 sec) If the principal quantum number is 4, what is the maximum number of electrons present?

Answer 626

32

Question 627

What cosmic phenomenon is typically described as a narrow beam of intense radiation from a supernova explosion?

Answer 627

Gamma-ray burst

Question 628

Name the particle that remains after a proton has been donated by an acid.

Answer 628

conjugate base

Question 629

Name the tendon that connects the calcaneous with the gastrocnemius.

Answer 629

Achilles tendon

Question 630

(30 sec) What is the momentum of a 12 kilogram object traveling at 6 meters per second?

Answer 630

72 kilogram meters per second

Question 631

What layer of the earth’s interior, made largely of silicon dioxide and magnesium oxide, lies just below the
Mohorivicic (moe-hoe-roe-vich-ich) Discontinuity and just above the outer core?

Answer 631

Mantle

Question 632

(30 sec) Using acceleration due to gravity as 10 meters per second squared, how much upward force in Newtons is necessary
to lift a 5 kilogram object upwards at 3 meters per second squared?

Answer 632

65

Question 633

AIDS is a disease caused by HIV that results in an ineffective immune system. What does AIDS stand for?

Answer 633

Acquired Immune Deficiency Syndrome

Question 634

(30 sec) What is the pH of a solution with a hydronium ion concentration of 0.01 mole per liter?

Answer 634

2

Question 635

(30 sec) Assuming gravity equals 10 meters per second squared, a student with a mass of 100 kilograms is standing on a
bathroom scale in an elevator that is moving downward with an acceleration of 2 meters per second squared. What
does the scale read in Newtons?

Answer 635

800 (Newtons)

Question 636

What artery carries deoxygenated blood?

Answer 636

Pulmonary (artery)

Question 637

Name the mutualistic relationship between a fungus and a green algae.

Answer 637

lichens

Question 638

What is the state of matter, when it is near absolute zero, that all the atoms will exhibit the same quantum state
behaving as one single ‘mega’ atom?

Answer 638

Bose-Einstein condensate

Question 639

What is the name of the fault line that produced four of the strongest earthquakes recorded in U.S. history and which
is named for a town in Missouri?

Answer 639

New Madrid (fault line) [properly pronounced MAD rid, not muh DRID]

Question 640

Who determined that the paths of the planets are ellipses with the center of the sun at one focus?

Answer 640

Kepler

Question 641

Name the two hormones that regulate blood sugar in humans.

Answer 641

Insulin and Glucagon

Question 642

What is the name of the present geological era?

Answer 642

cenozoic

Question 643

What is the SI unit of pressure?

Answer 643

pascal

Question 644

What are the two high energy molecules produced during the light dependent reactions of photosynthesis?

Answer 644

ATP and NADPH

Question 645

What principle states that the buoyant force on a object in the fluid is equal to the weight of the displaced fluid?

Answer 645

Archimedes’ principle

Question 646

What are the three methods by which heat may be transferred?

Answer 646

Conduction, convection, radiation

Question 647

What is the term used to describe a substance that is without water?

Answer 647

Anhydrous

Question 648

With what element are saturated fats actually saturated?

Answer 648

hydrogen

Question 649

What are the two protein molecules that make up the filaments of a muscle fiber?

Answer 649

actin and myosin

Question 650

What is the oxidation number for each atom in NH4+1?

Answer 650

N = -3; H = +1

Question 651

Who discovered that if a wire moves through a magnetic field, an electric current can flow?

Answer 651

(Michael) Faraday

Question 652

What type of plant-like protist has silica walls?

Answer 652

Diatom

Question 653

(30 sec) When a solution’s pH is changed from 9 to 6, how many more times acidic does the solution become?

Answer 653

10 to the third power or 1000 times

Question 654

What is the slope of an acceleration versus time graph?

Answer 654

Jerk

Question 655

What is the name given to a bed of porous rock, sand, or gravel that contains groundwater?

Answer 655

Aquifer

Question 656

What is the term describing the indentation that forms between the two halves of an animal cell during telophase?

Answer 656

Cleavage furrow

Question 657

What are the scientific names for the two ends of a battery?

Answer 657

Cathode and Anode (any order)

Question 658

Name the narrow ring-shaped islands that evolve from coral reefs attached to volcanic cones.

Answer 658

Atolls

Question 659

(30 sec) Assume the long-winged trait in insects is dominant over short wings. A long-winged insect is crossed with a short
winged insect producing all short-winged offspring. What percent chance did each offspring have for having long
wings?

Answer 659

50

Question 660

(30 sec) A 30 kilogram child sits 3 meters from the fulcrum of a see-saw. How far in meters should a 45 kilogram child sit
from the fulcrum on the other side in order to balance the 30 kilogram child?

Answer 660

2

Question 661

(30 sec) What is the gravitational field strength on a planet where a 15 kilogram object weighs 90 Newtons?

Answer 661

6 Newtons per kilogram

Question 662

Name the four basic types of body tissue.

Answer 662

Epithelial, connective, nerve, muscle

Question 663

Which law would support the statement, “In every sample of carbon monoxide, the mass ratio of carbon to oxygen is
3 to 4?

Answer 663

(Law of) Definite Proportions

Question 664

Consisting of a floor, understory, canopy, and emergent layers, what ecological areas classified as either temperate or
tropical can be found around the world?

Answer 664

Rain forests

Question 665

What scale is used to classify hurricanes according to wind, air pressure in the center, and potential for property
damage?

Answer 665

Saffir-Simpson (scale)

Question 666

What rule of chemistry states that electron orbitals of equal energy fill up such that each orbital has a lone electron
before the electrons begin to pair up?

Answer 666

Hund’s (Rule)

Question 667

A 45 kilogram child on ice skates catches a 5 kilogram ball thrown at 2 meters per second. How fast, in meters per
second, do they slide backwards neglecting friction?

Answer 667

0.2 (meters per second)

Question 668

Name the area of the vertebral column that includes the neck.

Answer 668

Cervical

Question 669

(60 sec) To the nearest tenth, how many moles of helium gas at STP would it take to fill a weather balloon with a volume of
65000 milliliters?

Answer 669

2.9

Question 670

Name the earth shaping process in which the weight of a subducting plate helps pull the trailing lithosphere into a
subduction zone.

Answer 670

Slab pull

Question 671

(30 sec) A car speeds up from 10 meters per second to 45 meters per second in 7 seconds. In meters per second squared, what
is the car’s acceleration?

Answer 671

5 (meters per second squared)

Question 672

What term refers to the shrinking of the cytoplasm in a plant cell due to water loss?

Answer 672

Plasmolysis (plaz MAHL uh suhs), do not accept crenation

Question 673

What is the name of the small hair-like structures on many unicellular organisms that are used to propel the organism
through a medium?

Answer 673

Cilia (or cilium)

Question 674

What is the formula for copper (I) sulfate (read: copper one sulfate)?

Answer 674

Cu2SO4 (said as C-U-2-S-O-4)

Question 675

What is the name given to the product of the angular velocity of a body and its moment of inertia about an axis of
rotation?

Answer 675

angular momentum

Question 676

How many electrons are shared in the covalent bond that exists between carbon and oxygen in carbon monoxide?

Answer 676

3 pairs or 6 electrons

Question 677

(30 sec) What is the predicted phenotypic ratio resulting from a dihybrid cross between two individuals heterozygous for both
traits?

Answer 677

9:3:3:1 (also accept 9/16, 3/16, 3/16, 1/16)

Question 678

Identify the major ocean current which forms in the Western Caribbean Sea and warms the winds that blow toward
Europe, enabling the British Isles and Norway to have milder winters than other regions of the same latitude.

Answer 678

Gulf Stream

Question 679

Name two of the three general shapes of bacteria.

Answer 679

round (coccus, cooci, sphere), rod (bacillus), spiral (spririllum)

Question 680

How would you classify metmorphic rocks that show layers of dark minerals alternating with layers of light minerals?

Answer 680

foliated

Question 681

(45 sec) What is the acceleration, in meters per second squared, of a 500 kilogram cart that is being pushed with a force of 20
Newtons?

Answer 681

0.04 (meters per second squared)

Question 682

What is the physical property of metals which allows them to be pulled into long thin wires?

Answer 682

ductility

Question 683

What is a watt equivalent to in terms of kilograms, meters, and seconds?

Answer 683

Kg·m² /s³

Question 684

Name the organelle containing stroma and thylakoids.

Answer 684

chloroplasts

Question 685

What is the molar mass of: C3H8O3 (read as: C-3-H-8-O-3)?

Answer 685

92 grams/mole (must have units)

Question 686

(30 sec) A concave mirror has a focal length of 10.0 centimeters. What is its radius of curvature in centimeters?

Answer 686

20.0 (centimeters)

Question 687

Name the three nonviable daughter cells produced during oogenesis. (Pronounce O-O-genesis)

Answer 687

Polar bodies

Question 688

What is the name of a steady state of chemical reactions, in which the forward and backward reactions are both
occurring but balanced?

Answer 688

Dynamic equilibrium (do not accept equilibrium)

Question 689

(30 sec) What is the mass of an object that has a kinetic energy of 50 Joules and is moving at 2 meters per second?

Answer 689

25 kilograms

Question 690

What plant chemical is used extensively in agriculture to ripen fruits that are harvested early and to loosen fruits so
that they drop more readily for machine harvest?

Answer 690

ethylene

Question 691

What is the SI unit for angular displacement?

Answer 691

radians

Question 692

What term is given to neucleotide triplets in messenger RNA?

Answer 692

codons

Question 693

What is the chemical formula for Copper one sulfate?

Answer 693

C U 2 S O 4

Question 694

What organelle that contains cristae, and has its own DNA, may once have been its own cell?

Answer 694

Mitochondria

Question 695

What would be the name of the precipitate formed if an aqueous solution of barium nitrate is combined with an
aqueous solution of sodium sulfate?

Answer 695

barium sulfate

Question 696

Whose principle, that governs the behavior of fluids, states that as the velocity of a fluid increases, the pressure
exerted by that fluid decreases?

Answer 696

Bernoulli’s

Question 697

Name the two planets in our solar system without any moons.

Answer 697

Mercury and Venus

Question 698

What is the bond angle for a trigonal planar compound?

Answer 698

120 degrees

Question 699

What term is used to describe an enzyme (or any protein) that has had a conformational (shape) change rendering it
useless?

Answer 699

denature or denatured

Question 700

What is the name for compounds that have shared molecular formulas but mirror image structural formulas?

Answer 700

stereo isomers

Question 701

What is the larval form of most Mollusks and Annelids called?

Answer 701

trochophore

Question 702

What property of electrical circuits is defined as the ratio of voltage to current?

Answer 702

Resistance

Question 703

The reddish coating on Martian rocks is evidence of the chemical reaction of hematite with what other compound?

Answer 703

water

Question 704

In what specific part of the body would one find the aqueous humor, vitreous humor and sclera?

Answer 704

eye

Question 705

A block is sitting on the ground. On a free body diagram for the block, what is the physics term for the force that is
acting upwards on the block?

Answer 705

normal

Question 706

What is the term for two substances, such as diamonds and graphite, which are two different forms of the same
element?

Answer 706

allotrope

Question 707

What type of mimicry is displayed by the viceroy butterfly as it mimics the monarch butterfly?

Answer 707

Mullerian (myoo-LER-ee-uhn) mimicry

Question 708

(30 sec) Calculate the kinetic energy of a truck with a mass of 2,000 kilograms that is moving at 8 meters per second.

Answer 708

64,000 Joules

Question 709

(30 sec) Give the total number of atoms in the formula of aluminum carbonate.

Answer 709

14

Question 710

What is the involuntary response of an organism to a stimulus, such as the response of a plant to gravity or sunlight?

Answer 710

tropism

Question 711

Name the binary star system found in the handle of the big dipper.

Answer 711

Alcor-Mizar

Question 712

What is the scientific term for a plant that sprouts with only one seed leaf?

Answer 712

Monocot

Question 713

If oxygen 18 undergoes beta decay, what new isotope is formed?

Answer 713

Flourine 18

Question 714

Give the Greek letter used in physics to indicate wavelength.

Answer 714

Lambda

Question 715

(30 sec) If two purple flowering plants with one plant being heterozygous for purple, are crossed and the F1 generation
produces only purple plants what is the genotype of the other plant?

Answer 715

Homozygous capital Ps. (PP)

Question 716

With a size of 578 miles in diameter, spherical in shape, and possessing abundant ice, what is the largest known
object in the asteroid belt?

Answer 716

Ceres

Question 717

(30 sec) In meters per second and assuming the speed of light to be 3 times 10 to the 8 meters per second, what is the speed
of light in a material that has an index of refraction of 1.5?

Answer 717

2 times 10 to the 8th or 200,000,000

Question 718

What is the Greek meaning of “platy” in the animal phylum Platyhelminthes (plat-i-hel-‘min(t)-thez)?

Answer 718

Flat

Question 719

(30 sec) What is the new acceleration of a sled in meters per second squared that was accelerating at a rate of 2 meters per
second squared if the net force is tripled and the mass is doubled?

Answer 719

3

Question 720

What English clergyman and chemist in 1774 discovered “dephlogisticated (pronounced dee-flow-gis-ti-kay-tid) air,”
or oxygen?

Answer 720

Joseph Priestley

Question 721

What type of covalent bond is found between amino acids?

Answer 721

peptide bond or polypeptide bond

Question 722

Identify two of the four natural processes that change climate.

Answer 722

Earth motions, Ocean circulation, Solar activity, Volcanic eruptions.

Question 723

What molecular shape results when 4 shared pairs of electrons surround the central atom?

Answer 723

Tetrahedron or tetrahedral

Question 724

The sizes of what objects are plotted on an H-R diagram?

Answer 724

Stars

Question 725

Name the type of cell that builds bone tissue.

Answer 725

osteoblast

Question 726

(30 sec) What is the resistance of a light bulb that has a current of 10 amperes and a voltage drop of 30 volts across it?

Answer 726

3 Ohms

Question 727

What is the name for a colloidal suspension of one liquid in another?

Answer 727

emulsion

Question 728

Name the order in which armadillos, anteaters, and sloths are classified.

Answer 728

Edentata
also accept: Xenarthrans

Question 729

What physical law holds that the ratio of the sines of the incident and refracted angles equals the reciprocal of the ratio
of indices of refraction?

Answer 729

Snell’s law

Question 730

(30 sec) A 4 kilogram block moving at 6 meters per second collides and sticks to a stationary 8 kilogram block. In meters
per second, what is the speed of the combined objects after the collision?

Answer 730

2

Question 731

Identify the structures that both open and close the stomata in a plant cell, allowing gasses to enter and leave the plant.

Answer 731

Guard cells