Science Test 1

Question 1

What is molar mass

Answer 1

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

Question 2

Types of muscle

Answer 2

smooth, skeletal, cardiac

Question 3

What 2 groups can all living things be classified as

Answer 3

Prokaryotes and Eukaryotes

Question 4

What separates the right and left side of the heart

Answer 4

septum

Question 5

What is the difference between Vector and Scalar quantities

Answer 5

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

Question 6

Amplitude vs Wavelength

Answer 6

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

Question 7

What type of tissue does the heart consist of

Answer 7

Cardiac muscle

Question 8

Inflammation is what kind of defense

Answer 8

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

Question 9

Define Series Circuit

Answer 9

1 pathway current can take.. volts the same throughout

Question 10

Define Parallel Circuit

Answer 10

2+ pathways current can take. volts same throughout

Question 11

Complex circuit vs Open circuit

Answer 11

complex contains neither a series or parallel circuit

Open circuit is not complete

Question 12

Atomic weight of Helium, Hydrogen, and Oxygen

Answer 12

helium = 4grams 
hydrogen= 1gram
oxygen= 16 grams

Question 13

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

Answer 13

1 mole = 22.4 liters

Question 14

Vitamin D help the body do what

Answer 14

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

Question 15

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

Answer 15

epiglottis- the trap door

Question 16

Function of the diaphragm

Answer 16

to assist the process of respiration

Question 17

explain the inverse relationship of velocity and wavelength

Answer 17

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

Question 18

What organ detoxifies blood and produces bile which is stored where

Answer 18

Liver detoxifies blood- bile is stored in gallbladder

Question 19

function of kidneys

Answer 19

extract waste from blood and balance fluids. Make urine

Question 20

Function of pancreas

Answer 20

Converts food to fuel via endocrine and exocrine

Question 21

Endocrine vs Exocrine

Answer 21

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

Question 22

equation for work

Answer 22

Force x distance = work

Question 23

Villi in the small intestines aid in what

Answer 23

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

Question 24

formula for molarity

Answer 24

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

Question 25

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

Answer 25

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

Question 26

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

Answer 26

potential

Question 27

Thermal energy comes from what

Answer 27

particle energy and heat

Question 28

kinetic energy describes what

Answer 28

motion and intertia

Question 29

Nuclear energy comes from what

Answer 29

atomic particles

Question 30

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

Answer 30

the cell would swell up and possibly burst

Question 31

normal blood pressure and pulse values

Answer 31

72 beats per minute and 120/80 mm hg

Question 32

Ligaments hold what together

Answer 32

bone to bone

Question 33

Tendons hold what together

Answer 33

muscle to bone

Question 34

What's Avogadro's number

Answer 34

number of moles in a sample/element/compound

Question 35

Bright timbre describes what

Answer 35

a sound waves quality

Question 36

Can DNA be altered

Answer 36

yes

Question 37

DNA codes for what

Answer 37

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

Question 38

What does RNA contain that DNA does not

Answer 38

RNA is single stranded and contains uracil instead of thymine

Question 39

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

Answer 39

increase

Question 40

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

Answer 40

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

Question 41

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

Answer 41

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

Question 42

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

Answer 42

Salts increase the ability to dissolve with an increase in temp

Question 43

the retina transmits nerve impulses to the brain via

Answer 43

the optic nerve

Question 44

What type of muscle pushes food through the digestive tract

Answer 44

smooth

Question 45

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

Answer 45

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

Question 46

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

Answer 46

MEIOSIS- happens in plant spores and gametes

Question 47

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

Answer 47

MITOSIS- happens in ordinary tissue growth

Question 48

What is the epididymis

Answer 48

duct that stores and carries sperm

Question 49

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

Answer 49

contraction of the diaphragm

Question 50

Why do the heart and veins have valves

Answer 50

so blood only flows in one direction

Question 51

CH4, C2H6, C3H8, C4H10, C5H12

Answer 51

methane, ethane, protane, butane, pentane