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Science Flashcards

1
Q

Which of the following parts of the central nervous system releases chemicals that regulate the pituitary gland?

A. Hypothalamus
B. Cerebellum
C. Thalamus
D. Spinal cord

A

A- hypothalamus

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2
Q

The shortening of the sarcomere in skeletal muscle is directly due to the interactional of which of the following?

A. Acetylcholine and acetylcholinesterase
B. Pepsin and Pepsinogen
C. Myosin and actin
D. Dye in and kinesin

A

C. Myosin and actin

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3
Q

Mutations in which of the following types of cells can be inherited by offspring?

A. Ovarian
B. Endocrine
C. Neural
D. Muscle

A

A. Ovarian

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4
Q

Which of the following describes the role of tendons?

A. Tendons attach skeletal muscle to bones
B. Tendons attach two bones
C. tendons attach bones to ligaments
D. Tendons attach skeletal muscles to ligaments

A

A. Tendons attach skeletal muscle to bones

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5
Q

Which of the following substances is excreated by sweat glands in response to the breakdown of protein and formation of ammonia?

A. Lysosomes
B. Water
C. Urea
D. Sebum

A

C - urea

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6
Q

Which of the following terms describes the removal of metabolic waste from the body?

A. Secretion
B. Catabolism
C. Anabolism
D. Excretion

A

D - excretion

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7
Q

A cell is placed in a hypertonic solution. Which of the following describes the resulting osmosis?

A. There is no flow of water
B. The net flow of water into and out of the cell is zero
C. There is a net flow of water out of the cell
D. There is a net flow of water into the cell

A

C - there is a net flow of water out of the cell

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8
Q

Which of the following is an example of active transport?

A. Aquaporins in kidney cells that help concentrate urine
B. Movement of substance from an area of high concentration to an area of low concentration
C. Movement of a sodium and potassium across the cell membrane against the concentration gradient
D. Loss of water from. A cell in a hypertonic solution

A

C - movement of sodium and potassium across the cell membrane against the concentration gradient

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9
Q

Which of the following vessels is responsible for carrying blood from the upper body to the right atrium of the heart?

A. Pulmonary veins
B. Aorta
C. Pulmonary artery
D. Superior vena cava

A

D - superior vena cava

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10
Q

Carbohydrates are composed of which of the following?

A. Nucleic acids
B. Monosaccharides
C. Isoprenoids
D. Amino acids

A

B- Monosaccharides

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11
Q

The following equation summarizes the carbonic acid bicarbonate ion buffer system of the blood
CO2 +H2O➡️ H2CO3 ➡️ HCO3- + H+

Which of the following equations shows the reaction that takes place when there are excessive H+ ions?

A. HCO3- + H+ ➡️H2co3
B. CO2 + h2o ➡️H2co3
C. H2co3 ➡️ Hco3- + H+

A

A - Hco3- + H+ ➡️ H2co3

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12
Q

A student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experiment as follows over a 2 month period, all with illumination at 1 meter distance from plants grown with the same soil and water conditions

3 exposed to ultraviolet light
3 exposed to infrared light
3 exposed to white light

At the end, she finds that IR treated plants are scorched, the up plants have wilted and white light created plants to grow normally.
Which of the following statements is most likely correct?

A. Three plants do not produce sufficient replications to draw conclusions
B. Wavelengths of lights the only variable that has been changed b/w groups
C. The wavelength of light does not affect photosynthesis
D. Infracted light conditions more energy than other wavelengths

A

B - wavelengths of lights the only variable that has been changed b/w groups

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13
Q

Which of he following is a weakness of correlational study?

A. Cannot be replicated
B. Cannot determine causation
C. Inability to control independent variables
D. Too many variables to control

A

Cannot determine causation

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14
Q

A vasectomy is a procedure in which the vas deferens are cut. Which of the following describes why a vasectomy leads to infertility?

  • the vasectomy blocks the movement of sperm from prostate gland to the bulbourethral gland
  • the vasectomy blocks the movement of sperm from the epididymis into the urethra
  • the vasectomy blocks the movement of speeds from the ejaculatory duct into the bulbourethral gland
  • the vasectomy blocks movement of sperm from the testis into the epididymis
A

The vasectomy blocks the movement of sperm from the epididymis into urethra

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15
Q

Lifelong protection after exposure to a virus such as chickenpox is due to which of the following types of immunity?

  • nonspecific
  • innate
  • transplantation
  • active
A

Active

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16
Q

An equal max of which of the following states of mater would completely fill either a 100ml or 500ml container?

  • gas
  • solid
  • liquid
  • mixture
A

Gas

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17
Q

Permanent damage to which of the following types of tissues in the spinal cord will cause paralysis?

  • nervous tissue
  • muscle tissue
  • bone tissue
  • connective tissue
A

Nervous tissue

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18
Q

How many times larger is the volume of a cube that is 4mm on all sides compared the volume of a cube that is 2mm on all sides (round the answer to the nearest whole number)

A

8 times

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19
Q

A researcher collects high resolution photographs of the earth taken from outer space at annual intervals for the last decades. This data would be most useful to analyze which of the following?

  • human movement during crises
  • migration patterns of large whales
  • weather patterns during hurricanes
  • deforestation in the rainforest
A

Sheathed patterns during hurricanes

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20
Q

Identify the pathway of blood through the components of the cardiovascular system, starting with the blood entering the heart through the superior vena cava (move options into box on the right placing them in order)

  • pulmonary artery
  • lungs
  • right atrium
  • right ventricle
  • pulmonary valve
A

Right atrium
Right ventricle
pulmonary valve
Pulmonary artery
Lungs

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21
Q

Which of the following body systems develop from the same origin tissue as lungs?

  • genitourinary system
  • musculoskeletal system
  • neuromuscular system
  • gastrointestinal
A

Gastrointestinal

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22
Q

A scientist predicts that germinating beans will use more oxygen than non germinating beans. This prediction is referred to as which of the following?

  • a conclusion
  • an observation
  • a hypothesis
  • data collection
A

A hypothesis

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23
Q

Which of the following processes causes most of the carbon dioxide from the blood to move into alveoli?

  • active transport using energy
  • diffusion down concentration gradient
  • conversion to carbon monoxide
  • passive transport using carrier proteins
A

Diffusion down a concentration gradient

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24
Q

Which of the following is a property of water?

  • water is made up of one molecule of hydrogen and two molecules of oxygen
  • water dissolves polar ionic compounds
  • water requires less heat than ethanol to raise its temperature
  • solid water is denser than liquid water
A

Water dissolves polar ionic compounds

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25
Q

Which of he following elements has the smallest atomic radius?

  • Ge
  • C
  • Si
    -Sn
A

C

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26
Q

which of the following pancreatic secretions disaccharides?

  • Trypsin
  • chymotrypsin
  • amylase
  • lipase
A

Amylase

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27
Q

Which of the following units is used to indicate mass?

  • cm3
  • Irm
    -Mg
  • MI
A

Mg

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28
Q

Histones are proteins associated with which of the following?

  • blood
  • sperm cells
  • hair follicles
  • dna
A

DNA

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29
Q

When an ionic salt is dissolved in water, the ions co3 and k+are formed. Which is the formula for the salt?

  • KCO3
  • k2co3
    -k3co2
    -k(co3)2
A

K2Co3

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30
Q

A researcher is gathering large amounts of data about patients who have a common disease and the effectiveness of various medications in comparison to a placebo. Which of the following types of graphs is the best way for the researcher to present the data?

  • line graph
  • pie chart
  • bar graph
  • flow chart
A

Line graph

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31
Q

Which of the following describes why water has a concave or downward curving meniscus when poured into a glass beaker?

  • glass has a higher density
  • water has a higher density
  • the adhesive force with the glass are greater than the cohesive forces
  • the cohesive forces with the glass are greater than the adhesive force
A

The adhesive force with the glass are greater than the cohesive forces

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32
Q

Which of the following statements correct,y describes the change in coat coloring of an arctic fox from brown in summer to white in winter?

A
  • the fox’s phenotype changes, but the genotype does not
  • the fox’s genotype changes, but phenotype does not
  • both phenotype and genotype of the fox changes
  • neither phenotype nor genotype of the fox changes
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33
Q

Which of the following best describes adaptive immunity?

  • the bodies barrier of defense, such as mucus membranes and secretions
  • the initiation of internal defenses, such as phagocytes and natural killer cells
  • the initiation of the inflammatory response
  • a response to specific traits of specific pathogens
A

A response to specific traits of specific pathogens

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34
Q

If a portion of dna strand bases read 5’ agctagcgt 3’ What would the sequence of bases on the complementary strand read?

3’ tcgatcgca 5’
5’ tcgutcgu 3’
5’ ucgaucgca3’
3’ agctagcgt 5’

A

3’ tcgatcgca 5’

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35
Q

Which of the following is a function of a catalyst?

  • to increase the activation energy of a reaction
  • to increase the rate of reaction
  • to convert a nonspontaneous reaction to a spontaneous reaction
    To increase product yield
A

To increase the rate of reaction

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36
Q

Which of the following describes the process of which carbon dioxide (dry ice) turns directly into carbon dioxide gas?

  • sublimation
    Deposition
  • condensation
  • evaporation
A

Sublimation

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37
Q

Which of the following occurs during inhalation?

  • air moves from areas of low pressure to areas of high pressure
  • the diaphragm moves downward
  • the ribcage lowers
  • the volume of the thoracic cavity decreases
A

The diaphragm moves downward

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38
Q

Which of the following body cavities is subdivided into the thoracic and abdominopelvic cavities?

  • dorsal
    -cranial
  • vertebral
  • ventral
A

Ventral

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39
Q

Which of the following layers of skin contains glands and hair follicles?

  • stratum lucidum
  • hypodermis
  • stratum cornerman
    Dermis
A

Dermis

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40
Q

Which of the following structures is present in both prokaryotic and eukaryotic cells?

  • chloroplast
    -cell membrane
  • endoplasmic reticulum
  • Golgi apparatus
A

Cell membrane

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41
Q

Which of the following is true about koch postulates are met regarding a disease?

  • the disease is caused by a microorganism
  • the disease is hereditary
  • the disease is a result of a dietary deficiency
  • the disease is non infectious
A

The disease is caused by a microorganism

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42
Q

Which of the following is part of the pulmonary circuit?

  • superior vena cava
  • pulmonary vein
  • brachial artery
  • aorta
A

Pulmonary vein

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43
Q

Which of the following organic molecules contain both an amine and carboxyl group?

  • lipids
  • chitin
  • cellulose
  • proteins
A

Proteins

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44
Q

In a certain flower red flowers are dominant over white flowers a plant heterozygous for red flowers in a plant with white flowers are crossed. which of the following is expected proportion of genotypes in the next generation

  • 2 red, 2 white
  • 4 red, 0 white
  • 3 red, 1 white
    -1 red, 3 white
A

2 red, 2 white

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45
Q

Osteoporosis results from which of the following

  • A decline in osteoclast activity while osteoblast activity continues
  • an increase in osteocyte while osteoblast activity continues at expected levels
  • a decline in osteoblast activity
A

A decline in osteoblast activity

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46
Q

Which of the following is released by one type of immune cell to directly activate type of immune cells?

-lysosome
-perforin
Cytokines
-granzymes

A

Cytokines

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47
Q

The measurement indicted by the line across the centre of the cell is best referred to as which of the following?

  • radius
  • diameter
  • area
  • volume
A

Diameter

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48
Q

7x-6=3x-26

-5
5
8
-8

A

-5

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49
Q

Which of the following properties of water explains its solvent abilities for certain substances?

High surface tension
Memetic energy of liquid water
Polarity of water molecules
High specific heat

A

Polarity of water molecules

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50
Q

Which of the following vessels carry oxygenated blood?

Pulmonary vein
Inferior vena cava
Pulmonary artery
Superior vena cave

A

Pulmonary vein

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51
Q

Which of the following is a mass with the ovary to secrete hormones to maintain the uterine lining during pregnancy?

Umbilical cord
Corpus luteum
Oocyte
Oviduct

A

Corpus luteum

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52
Q

To separate genetic dna fragments by size, which of the following laboratory methods is most useful?

Spectrophotometry
Electrophoresis
Filtration
Titration

A

Electrophoresis

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53
Q

In a plant in which frizzy leaves (F) are dominant over smooth leaves (f) , which of the following crosses will produce only offspring with smooth leaves?

ff x ff
Fr xFf
FF xFF
Ff x f

A

ff x ff

54
Q

Which of the following physiological responses is caused by the release of anti diuretic hormones?

Decrease in water reabsorption in the collecting duct
Decrease in the concentration of calcium in the glomerulus
Increase in water reabsorption in the collecting duct
Increase in concentration of calcium in the the glomerulus

A

Increase in water reabsorption in the collecting duct

55
Q

Which of the following is the atomic number that has 12 protons and 12 neutrons?

12
24
14
144

A

12

56
Q

Which of the following glands synthesizes anti diuretic hormone?

Pineal gland
Hypothalamus
Thymus
Pancreas

A

Hypothalamus

57
Q

Which of the following is the process in which an ovarian follicles matures and releases a reproductive egg?

Menstruation
Ovulation
Fertilization
Oogenesis

A

Ovulation

58
Q

Which of the following reasons explains why it is important for new scientific findings to be published?

  • publishing findings will help scientist become more biased
    Other scientist can validate or disapprove the findings
    Scientist will get paid if findings are published
    This prevents other scientist from preforming similar tests
A

Other scientist can validate or disprove the findings

59
Q

Which of the following substances is responsible for donating H+ ions to act as a buffer when blood ph rises?

Carbon dioxide
Oxygen
Carbonic acid
Carbon monoxide

A

Carbonic acid

60
Q

Which of the following is the structure through which blood exists the glomerulus?

Proximal tubule
Distal tubule
Afferent arteriole
Efferent arteriole

A

Efferent arteriole

61
Q

Which of the following is the function of totipotent cell?

Carries electrical impulses
Flight’s infectious disease
Aidsthe maturation of sex cells
Develops into any kind of cell

A

Develops into any kind of cell

62
Q

Which of the following statements best supports the hypothesis that viruses can cause cancer?

Genes that regulate cell division are found in some viruses
Viruses and cancer cells both replicate rapidly
Cancerous and normal cells share genetic sequence
Cellular dna has sequences related to viral sequences

A

Genes that regulate cell division are found in some viruses

63
Q

In a phase diagram which of the following is the term used for a substance held at temperature and pressure where the solid, liquid and gaseous states of a substance exist simultaneously?

Critical point
Triple point
Critical temperature
Absolute zero

A

Triple point

64
Q

Which of the following microorganisms lack their own metabolic pathways and can reproduce inside a host cell?

Protozoa
Helminths
Bacteria
Viruses

A

Viruses

65
Q

In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure the liquid and gaseous phases of a substance merge together into a single phase?

Critical point
Triple point
Critical temperature
Absolute zero

A

Critical point

66
Q

Which of the following indicates the function of sodium bicarbonate released by the pancreas?

Sodium bicarbonate stimulates the pyloric sphincter
Sodium bicarbonate is a protease thta digests carbohydrates
Sodium bicarbonate neutralizes the acidity of chime
Sodium bicarbonate inhibits peristalsis

A

Sodium bicarbonate neutralizes the acidity of chime

67
Q

I which of the following types of cells produce and release antibodies?

Natural killer cells
Helper T cells
Cytotoxic T cells
Plasma B cells

A

Plasma B cells

68
Q

The cytoskeleton of a cell is comprised of which of the following micro molecules?

Proteins
Carbohydrates
Nuclear acid
Lipids

A

Proteins

69
Q

Which of the following summarizes a change that takes place as a solid turns into a liquid?

Intermolecular forces between particles become stronger
Particles move closer together
Particles have a decrease in mobility
Particles become less ordered

A

Particles become less ordered

70
Q

Which of the following are specific immune response (select all that apply)

T lymphocytes activation and Clonal expansion
Antibody production
The formaction of B cells
Complement proteins binding to and destroying bacteria

A

T Lymphocytes activation and clonal expansion
The formation of B cells
Complement proteins binding to and destroying bacteria

71
Q

Which of the following is the main function of centrisoomes in animal cells?

Pathogen digestion
Organelle trafficking
Micro tube organization
Cytoplasm

A

Mircotubule organization

72
Q

Testosterone is categorized as which of the following types of hormone?

  • aldosterone
    Progestin
    Androgen
    Estrogen
A

Androgen

73
Q

Which of the following are the two major parts of the nervous system?

Anonomic nervous system and somatic nervous system
Peripheral nervous system and somatic nervous system
Autonomic nervous system and central nervous system
Peripheral nervous system and central nervous system

A

Peripheral nervous system and central nervous system

74
Q

Hiker who finds a human body at high altitude in the Italian Alps thought the man had died recently, but tests indicate that he was shot with an arrow more then 5000 years ago. Which of the following would be the best reason for prolonged preservation of the body?

The body was frozen in the cold temperature of the alps shortly after he died and remained frozen until it was found
- the food that the person ate contained toxins that killed the bacteria that would otherwise destroy ghe body
- the arrow wound caused blood to flow out of the body, which led to enzymes that break down tissue to be cleared from the body
- the ultraviolet rays as such high altitude caused all the body’s molecules to be preserved

A

The body was frozen in the cold temperature of the alps shortly After he died and remained frozen until found

75
Q

Nitrogen gas is an extremely stable because it’s structure contains which of the following?

Hydrogen bonds
Triple covalent bonds
Resonance bonds
ionic bonds

A

Triple covalent bonds

76
Q

Which of the following best describes the result of using a catalyst in a chemical reaction?

The yield of a product is increased
A greater amount of heat energy is released by the reaction
A more desirable product is often formed
The reaction is completed in a shorter amount of time

A

The reaction is completed in a shorter amount of time

77
Q

Which of the following substances protect the skin from ultraviolet radiation?

Keratin
Melanin
Perspiration
Sebum

A

Melanin

78
Q

In a hypertonic solution, water flows through aquaporins embedded in the plasma membrane of the cell. This type of transport is best known as which of the following?

Osmosis
Active transport
Facilitated diffusion
Diffusion

A

Osmosis

79
Q

Which of the following is a group that can be measured against the experimental group?

Control
Variable
Manipulated
Responding

A

Control

80
Q

A myocardial infarction affects which of the following blood vessels of the heart?

Cornary artery
Pulmonary
Vena cava
Aorta

A

Cornary artery

81
Q

Lithium has an atomic number of 3 and a mass number of 7. Which of the following is the number of protons in a lithium atom

12
7
4
3

A

3

82
Q

Which of the following allows the AIDs virus, which contains RNA to insert viral Dna into the DNA of the host T. Ella after the aids virus enters the cell ?

Receptor protein located on the surface of the virus
Reverse transcriptase,an enzyme encoded by the virus
The phospholipids found in the envelope of the virus
The proteins that make up the capsid of the virus

A

Receptor proteins located on the surface of the virus

83
Q

A patients urine output was 800 ml/hr following a treatment, the patients urine output was 1200 ml/hr. Which is the percentage change in the urine output?

A

50%

84
Q

Carbon has an atomic number of 6 which of the following is true about isotope C12

Processes 6 neutrons and 6 protons
Posses 7 neutrons and 5 electrons in the nucleus
Processes 7 protons and 5 neutrons in the nucleus
Processes 6 protons and 6 electrons in the nucleus

A

Processes 6 neutrons and 6 protons in the nucleus

85
Q

Which of the following structures is the flap of cartilage that prevents the movement of food into the trachea?

Glottis
Pharynx
Epiglottis
Larynx

A

Epiglottis

86
Q

Which of the following actions does a hydrophilic hormone take to activate a target cell?

The hormone binds to the cell surface receptors of the target
The hormone binds to the cytosol is receptor in the target cell
The hormone enters a target cell through a transport protein
The hormone passes through the plasma membrane of the target cell

A

The hormone binds to cell surface receptors of the target cells

87
Q

During muscle contractions, myosin is directly responsible for which of the following?

Forming cross bridges with actin molecules
Binding to troponin molecules
Releasing calcium from sacroplasmic reticulum
Imitating action potential along the sarcolemma

A

Forming cross bridges with actin molecules

88
Q

Which of the following ions binds to troponin complex, initiating contraction of a muscle?

Potassium
Sodium
Phosphorus
Calcium

A

Calcium

89
Q

A group of students performed , an experiment to test terminal velocity, which is the greatest speed obtained by a falling object. The students dropped different numbers of coffee filters and measured the resulting terminal velocity. Which of the following conclusions is supported by the data?

Terminal velocity is when the force of gravity is equal to air resistance
The greater the number of filters, the smaller the terminal velocity
Heavier objects fall faster than lighter objects
Heavier objects take more time to reach terminal velocity

A

Terminal velocity is when the force of gravity is equal to air resistance

90
Q

The pleura is a connective tissue sheath that covers which of the following organs?

Liver
Spleen
Heart
Lung

A

Lung

91
Q

Which of the following best describes the hypothesis that viruses can cause cancer?

Cancerous and normal cells share genetic sequences
Genes that regulate cell division are found in some viruses
Viruses and cancer cells both replicate rapidly
Cellular dna has sequences released

A

Genes that regulate cell division are found in some viruses

92
Q

Which of the following is the appropriate threshold value for mammalian neurons?

0mv
+35 mv
-80 mv
-55 mv

A

-55 mv

93
Q

Which of the following is a function of a totipotemt cell?

Carried electrical impulses
Develops into any kind of cell
Aids in the maturation of sex cells
Fights infectious diseases

A

Develops into any kind of cell

94
Q

In which of the following data table of an experiment carried at 4 degree Celsius over 4 hrs , which of the following options represents the dependent variable?

Duration
Temperature
Bag mass change
Sucrose concentrations

A

Bag mass change

95
Q

In a hypertonic solution water flows through aquaporins embedded into the plas,a membrane of the cell . This type of transport is best known as which of the following?

Facilitated diffusion
Active transport
Diffusion
Osmosis

A

Osmosis

96
Q

Which of the following occurs in an oxidation reaction?

Removal of oxygen
Addition of neurons
Removal of electron
Addition of carbon

A

Removal of electron

97
Q

Which of the following layers of skin lacks blood vessels?

Hypodermics
Papillary
Epidermis
Reticular

A

Epidermis

98
Q

Which of the following immune system molecules creates holes in the cell membrane of their target cells in order to destroy the cell?

Interferon
Perforin
Lymphotoxins
Cytokines

A

Perforin

99
Q

Which of the following terms describes the relaxation of the chambers of the heart during the cardiac cycle?

Systole
Tachycardia
Diastole
Bradycardia

A

Diastole

100
Q

Which of the following describes a genetic mutation that results in uncontrolled division of a single cell with in the body?

Stem cell
Translation
Gene therapy
Cancer

A

Cancer

101
Q

Both digestion and absorption happen in which of the following of the digestive system?

gallbladder
Esophagus
Stomach
Small intestine

A

Small intestine

102
Q

Which of the following is a function of bone ?

Detoxification of alcohol
Secrete hormones
Storage of minerals
Production of otolith

A

Storage of minerals

103
Q

Which of following organs filters excess solutes from the blood?

Spleen gallbladder
Kidneys
Stomach

A

Kidneys

104
Q

Lipids absorbed in the small intestine will first enter which

Arteries
Lacteal vessels
Veins
Interstitial spaces

A

Lacteal vessels

105
Q

Experiments cannnot validate hypothesis’s, only falsify them. The statement can be restated in which of the following ways?

Until disproved , an explanation for an observation is valid
Certain concepts cannot be subjected to direct experimentation
Ahypothysis thta has been falsified remains provisional

A

A hypothesis that has been falsified remains provisional

106
Q

An individual suffers severe blunt trauma to the thoracic cavity. Which of the following organs are at the greatest risk from the injury?

Brain and spinal cord
Liver and stomach
Large and small intestine
Heart and lungs

A

Heart and lungs

107
Q

A researcher writes grant proposal to repeat an experiment that has recently published by another researcher. Which of the following statements best supports the grant proposal?

Reporting published work with changed variables will extend the previous results
Funding this important research h will benefit sciemce
Repeating published work will provide independent confirmation of the results

A

Repeating published work will provide independent confirmation of the results

108
Q

Which of the following conclusions are supported by the data

Air resistances is greater for a then b
The greater the mass of an object , the fasted it will fall
The time of fall is independent of the mass of the objects
Objects A and B will fall at the same time.

A

The time of the fall is independent of the mass of the objects

109
Q

If a mothers ____ cell contains mutated dna, this mutation can be passed to offspring

Gene
Stem
Sex
Germ

A

Germ

110
Q

How much stronger is the hydrogen ion concentration of ph 4 solution as compared to ph 9?

100,000
0.000001
50
5

A

100,000

111
Q

A study found 2 processes. Process A and process B to be correlated. Which of the following is true of these processes?

The study indicates the process A cause process b
The study does not indicate a casual relationship between the processes
The study cannot indicate whether process A and B are a negative relationship
The study cannot indicate whether process a and b have a positive relationship

A

The study does not indicate a casual relationship between the processes

112
Q

Genetic information describing the characteristics of an organism is found in which of the following?

Membranes
Ribosome
Cilia
Nuclei

A

Nuclei

113
Q

Which of the following allows for Repolarization of a neuron?

The opening of sodium opening of potassium channels, allowing potassium to leave the neuron
The closing of both sodium and potassium channels to restrict movement of ions into and out of the neuron

A

The opening of potassium channels, allowing potassium to leave

114
Q

Which of the following properties does soap have that makes it useful for washing dirt off one’s hands with water?

Soaps enzymatic action helps to dissolve grime into smaller particles
Soaps dual polar and Nonpolar nature helps bind to oil and water
Soaps rough texture physically scours grime off
Soap’s acidity causes grime to precipitate into the water

A

Soaps dual polar and Nonpolar nature helps bind oil and water

115
Q

Which of the following growth curves shows a population that is at its carrying capacity?

A
B
C
D

A

A

116
Q

A researcher wants to gather data on the average wing strength of all birds found that American northwest the researcher only has one small net,so all large birds were excluded from the study. The researchers results for different than expected, but he believes his data to estimate the strength of birds.
For which of the following reasons should this data be rejected?

Data contradicts the control group
Data cannot be displayed graphically
Data were different than expected?
Data are biased by the methodology

A

Data are biased Methodology

117
Q

Which of the following shows the correct order to most simple to most complex

Organs, tissues, cells, Atoms
Atoms, cells,tissues, organs
Cells, tissue, atoms, organs
Atoms, organs, tissues, cells

A

Atoms, cells, tissues, organs

118
Q

Which of the tools can be used to measure the turbidity of a liquid by measuring the transmission of light though the sample?

Electrophorometer
Microdensitometer
Spectrophotometer
Centrifuge

A

Spectrophotometer

119
Q

The microchondrial inner membrane Carries out the same function in cellular respiration as the membrane of chloroplast in photosynthesis which completes the sentences above?

Tonoplast
Thylakoid
Nuclear
Epithelial

A

Thylakoid

120
Q

Which of the following regions of the body are the tibia and fibula ?

Tarsal
Coxal
Crural
Anticubital

A

Crural

121
Q

Emphysema caused by damaged alveoli from toxins and pollutants is luckily to result in the body have difficulty performing which of the following?

Exchanging oxygen and carbon dioxide
Producing enzymes
Releasing histamine and acetylcholine
Absorbing food

A

Exchanging oxygen and carbon dioxide

122
Q

Which of the following structures is an exocrine gland?

Pineal gland
Parathyroid
Parotid gland
Pituitary gland

A

Parotid gland

123
Q

Which of the following classes of biological molecules includes enzymes?

Carbohydrates
Lipids
Proteins
Vitamins

A

Protein

124
Q

Which of the following is a component of integumentary system that secretes pheromones?

Fossa ovalis
Seminiferous tubule
Dermal papilla
Apocrine

A

Apocrine

125
Q

Which of the following functions does myelin sheath perform for a nerve cell?

Regeneration
Nutrition
Insulation
Sensory perception

A

Insulation

126
Q

A triple point of substances is the temperature and pressure at which the substances exist at which of the following

Simultaneously in soil, Joel, and plasma phrases
As a sol with gas and solid, trapped in the liquid
Simultaneously in solid liquid and gas phases
As gel with solid and liquid, tracked him gas

A

Simultaneously in solid liquid and gas phases

127
Q

An organism with an unknown genotype is crossed with n other organism that shows the recessive trait (as). The punnet square above shows the results. Which of the following is the unknown genotype?

aa
A
a
AA

A

aa

128
Q

To accurately measure the density of a series of small irregular solids made of plastic , wood, fiberglass and glass. A small student will need which of the following laboratory tools?

Graduate cylinders, water, weighing balance
Weighing balance, Bunsen burner, metric ruler
Graduated cylinder, spectrophotometer, water
Graduated beaker, metric ruler, water

A

Graduated cylinders, water, weighing balance

129
Q

Dow which of the following reasons does chloride ion have a negative charge?

It gains an electron
It loses an elect
It lost a proton
It gains a proton

A

It gains an electron

130
Q

A patient goes to the dr with a cold and sore throat and asks for antibiotics. The dr refuses to prescribe antibiotics because the illness is caused by which of the following?

Viruses
Bacteria
Protist
Iris

A

Viruses

131
Q

The covalent binds between the monomers of n enzyme macromolecule are

Glycosidic bonds
Phosphodiester bonds
Peptide bonds
Ester bonds

A

Peptide bonds

Teas (4 decks)

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