winter finals

Question 1

what is a constant variable?

Answer 1

stays constant or unchanged throughout the investigation.

Question 2

what is a controlled variable?

Answer 2

stays constant or unchanged throughout the investigation.

Question 3

what is a control group?

Answer 3

group that doesn’t receive any treatment.

Question 4

what is biology the study of?

Answer 4

life and living things.

Question 5

what is a prokaryotic? give examples of what type of cell or cell(s) it is.

Answer 5

doesn’t contain membrane-bound organelles, such as the nucleus. bacteria.

Question 6

what is a eukaryotic? give examples of what type of cell or cell(s) it is.

Answer 6

contain membrane-bound organelles, such as the nucleus. plants, animals, fungi.

Question 7

what structure regulates what enters and exits a cell?

Answer 7

plasma membrane.

Question 8

in which organelle does photosynthesis occur?

Answer 8

chloroplasts

Question 9

what is the function of a mitochondria?

Answer 9

produce the energy currency of the cell

Question 10

which organelle contains the cell’s genetic material (DNA)?

Answer 10

nucleus

Question 11

which cellular structure helps make proteins?

Answer 11

ribosomes

Question 12

how are plant cells different from animal cells?

Answer 12

plant cells have an organelle called chloroplast and they have cell walls (animal cells do not)

Question 13

active transport

Answer 13

describes what happens when a cell uses energy to transport something.

Question 14

osmosis

Answer 14

Osmosis is a process in which a fluid moves through a semipermeable membrane so that each side has equal amounts

Question 15

example of diffusion :

Answer 15

Digested particles of food diffuse in the colon.

Question 16

what will occur if an animal cell is placed on fresh water?

Answer 16

it will make the cells swell up and eventually burst.

Question 17

once equilibrium has been reached what will happen to the molecules?

Answer 17

particles of a solution will continue to move across the membrane in both directions.

Question 18

what is the result of cell division after mitosis?

Answer 18

two genetically identical daughter nuclei.

Question 19

what does the cytoplasm do

Answer 19

supports and cushions organelles.

Question 20

what does the nucleus do

Answer 20

controls cell processes.

Question 21

list the eight characteristics of life

Answer 21

are made up of units called cells
reproduce
universal genetic code
grow and develop
obtain and use energy
respond to environment
maintains stable internal enviorment
as a group; changes over time

Question 22

bias is…

Answer 22

prejudice material

Question 23

line…

Answer 23

continuous data on x and y

Question 24

pie…

Answer 24

percentages or parts of a whole

Question 25

importance of decomposers;

Answer 25

plants wouldn't get their nutrients and dead matter would waste and pile up.

Question 26

biotic

Answer 26

living things in an ecosystem

Question 27

abiotic

Answer 27

non-living things in an ecosystem

Question 28

difference in how matter and energy move in ecosystems

Answer 28

matter cycles | energy flows

Question 29

food web

Answer 29

a network of complex interactions and feeding relationships among all organisms in an ecosystem.

Question 30

food chain

Answer 30

series of steps in an ecosystem in which organism transfer energy by eating and being eaten.

Question 31

sketch on a piece of paper what exponential and logistic growth looks like (go online if you need help)

Answer 31

(sorry, I couldn't provide pictures)

Question 32

carrying capacity is...

Answer 32

maximum population size

Question 33

what type of symbiosis is defined by both organisms benefiting?

Answer 33

mutalism

Question 34

what is ecological succesion?

Answer 34

a series of predictable changes

Question 35

define polar :

Answer 35

molecules that are neautral

Question 36

which characteristic of water allows some animals to"walk-on-water"?

Answer 36

surface tension

Question 37

examples of substances made up of lipids

Answer 37

fats, oil and steroids

Question 38

compare the energy storage of carbohydrates and lipids

Answer 38

carbs are used for quick energy and lipids are used for long-term energy STORAGE

Question 39

which characterisitc of water refers to its ability to dissolve most substances?

Answer 39

universal solvent

Question 40

plants use this organic compound to build strong cell walls

Answer 40

carbs

Question 41

what are monomers?

Answer 41

proteins that are amino-acids

Question 42

how do enzymes affect the reactions in living cells?

Answer 42

they speed up reactions

Question 43

what can denature enzymes?

Answer 43

increase in tempratue

Question 44

explain what happens to a cells volume and surface area as its size inceases

Answer 44

the volume of the cell increases faster than its surface area making it less efficent