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NLN PAX > Science Test 1 > Flashcards

Science Test 1 Flashcards

1
Q

What is molar mass

A

atomic weight of an atom measured in grams/ moles per gram

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2
Q

Types of muscle

A

smooth, skeletal, cardiac

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3
Q

What 2 groups can all living things be classified as

A

Prokaryotes and Eukaryotes

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4
Q

What separates the right and left side of the heart

A

septum

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5
Q

What is the difference between Vector and Scalar quantities

A

Vector quantity has both magnitude and direction- acceleration, force, velocity
Scalar quantity has only magnitude- speed, temperature, mass, length

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6
Q

Amplitude vs Wavelength

A

Amplitude is the distance from the top of te peak to the bottom of the trough
Wavelength is the distance between the peaks or distance between the troughs

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7
Q

What type of tissue does the heart consist of

A

Cardiac muscle

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8
Q

Inflammation is what kind of defense

A

Secondary defense against a foreign pathogen b/ it works after the body has been infected

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9
Q

Define Series Circuit

A

1 pathway current can take.. volts the same throughout

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10
Q

Define Parallel Circuit

A

2+ pathways current can take. volts same throughout

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11
Q

Complex circuit vs Open circuit

A

complex contains neither a series or parallel circuit

Open circuit is not complete

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12
Q

Atomic weight of Helium, Hydrogen, and Oxygen

A 
helium = 4grams 
hydrogen= 1gram
oxygen= 16 grams
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13
Q

1 mole of gas = how many liters of space in Standard Temp & Pressure

A

1 mole = 22.4 liters

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14
Q

Vitamin D help the body do what

A

It aids in the absorption of calcium which helps the growth and development of bones

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15
Q

The larynx is covered by ___ so that food doesn’t enter the trachea

A

epiglottis- the trap door

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16
Q

Function of the diaphragm

A

to assist the process of respiration

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17
Q

explain the inverse relationship of velocity and wavelength

A

For velocity to stay constant if frequency goes up wavelength must go down and vise versa

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18
Q

What organ detoxifies blood and produces bile which is stored where

A

Liver detoxifies blood- bile is stored in gallbladder

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19
Q

function of kidneys

A

extract waste from blood and balance fluids. Make urine

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20
Q

Function of pancreas

A

Converts food to fuel via endocrine and exocrine

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21
Q

Endocrine vs Exocrine

A

endo- releases hormones into blood- insulin lowers blood sugar glucagon to raise blood sugar
Exo- produces enzymes that digest proteins, fats, carbs

22
Q

equation for work

A

Force x distance = work

23
Q

Villi in the small intestines aid in what

A

the absorption by providing a greater surface area for materials passing through the digestive tract

24
Q

formula for molarity

A

mole of a solute / liters of a solute (ex. 1 mole of sub makes .500Liters the molarity is 1/.5 or 2M)

25
Q

By what process does oxygen travel from air into your lungs and then into your blood?

A

diffusion- gasses diffuse through membranes into blood. Takes place at capillaries in the alveoli

26
Q

Before an object begins motion what kind of energy does it posses

A

potential

27
Q

Thermal energy comes from what

A

particle energy and heat

28
Q

kinetic energy describes what

A

motion and intertia

29
Q

Nuclear energy comes from what

A

atomic particles

30
Q

What would a cell’s reaction be if it were in a solution where the concentration of solutes is higher inside the cell than outside

A

the cell would swell up and possibly burst

31
Q

normal blood pressure and pulse values

A

72 beats per minute and 120/80 mm hg

32
Q

Ligaments hold what together

A

bone to bone

33
Q

Tendons hold what together

A

muscle to bone

34
Q

What’s Avogadro’s number

A

number of moles in a sample/element/compound

35
Q

Bright timbre describes what

A

a sound waves quality

36
Q

Can DNA be altered

A

yes

37
Q

DNA codes for what

A

genetic instructions for the development and function of all living things made up of nucleic acids
- RNA codes for protein synthesist mainly and sometimes transfers genetic info

38
Q

What does RNA contain that DNA does not

A

RNA is single stranded and contains uracil instead of thymine

39
Q

As water evaporates from a solution the concentration of the solute in the solution will do what

A

increase

40
Q

For an atom to become an ion that posses a negative charge the atom must have what

A

gained an electron
- ions are created by the loss or gain of an electron. Ions start positive. if ion turns negative its due to a gained electron

41
Q

What substances show a decrease in solubility in water with increases in temp

A

Gasses decrease in their ability to dissolve when theres an increase in temperature

42
Q

What substances show an increase in solubility i water with an increase in temp

A

Salts increase the ability to dissolve with an increase in temp

43
Q

the retina transmits nerve impulses to the brain via

A

the optic nerve

44
Q

What type of muscle pushes food through the digestive tract

A

smooth

45
Q

Millions of organic compounds are made from what element that has the ability to form strong bonds, long chains and have various functional groups

A

carbon.
carbon to carbon bonds are strong and carbon chains can include other elements to give rise to different functional groups

46
Q

type of cell division that results in 4 daughter cells each with half the number of chromosomes. happens in the production what 2 things

A

MEIOSIS- happens in plant spores and gametes

47
Q

type of cell division that results in 2 daughter cells with the same number and kind of chromosomes as the parent nucleus. happens in what kind of production

A

MITOSIS- happens in ordinary tissue growth

48
Q

What is the epididymis

A

duct that stores and carries sperm

49
Q

During breathing the air pressure in the lungs changes as a result of what

A

contraction of the diaphragm

50
Q

Why do the heart and veins have valves

A

so blood only flows in one direction

51
Q

CH4, C2H6, C3H8, C4H10, C5H12

A

methane, ethane, protane, butane, pentane

NLN PAX (5 decks)

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