week 3

Question 1

which of the following is the correct sequence of stages in cellular respiration

Answer 1

glycolysis, citric acid cycle, electron transport

Question 2

carbon fixation occurs in the

Answer 2

calvin cycle

Question 3

the utlimate source of energy in food is

Answer 3

the sun

Question 4

enzymes are catalysts because they operate to

Answer 4

lower activation energy

Question 5

electrons generated from the calvin cycle go next to the

Answer 5

electron transport chain

Question 6

in cellular respiration, most ATP is produced directly as a result of

Answer 6

the movement of hydrogen ions across the inner mitochondrial membrane

Question 7

pyruvate is oxidized to ____ before it can enter the krebs cycle

Answer 7

acetyl CoA

Question 8

which of the following is the source of electrons for light reactions

Answer 8

H2O

Question 9

The Calvin cycle makes direct use of ____ to make ____

Answer 9

CO2, ATP, and NADPH . . . sugar

Question 10

Light energy arrives at earth in little packets called

Answer 10

photons

Question 11

aerobic cellular respiration generates about ___ APT from one glucose

Answer 11

38

Question 12

the process of fermentation allows the process of glycolysis to continue because

Answer 12

it provides the cell with a supply of NAD+

Question 13

___ is used in cellular respiration and produced in photosynthesis

Answer 13

oxygen

Question 14

which of the following is a direct product of glycolysis

Answer 14

pyruvic acid

Question 15

the energy available in ATP is stored in the

Answer 15

phosphate bond

Question 16

the overall purpose of the calvin cycle is to

Answer 16

building organic molecules (plant parts)

Question 17

plants use ___ during photosynthesis and produce ___, while animals produce ___ and use ___ during cellular respiration.

Answer 17

carbon dioxide…oxygen…carbon dioxide…oxygen

Question 18

if a plant appears blue to us, what wavelength of light is being relected

Answer 18

blue

Question 19

process by which an atom or molecule loses an electron

Answer 19

oxidation

Question 20

the light reactions of photosynthesis take place

Answer 20

in the thylakoid membrane

Question 21

the process of fermentation allows the process of gylcolysis to continue because

Answer 21

it provides the cell with a supply of NAD+

Question 22

within the chloroplast, the flattened sacs are caleed

Answer 22

thylakoids

Question 23

which part of cellular respiration produces to most NADH

Answer 23

citric acid cycle

Question 24

photosynthesis is carried out by

Answer 24

chloroplasts

Question 25

where in the cell does glycolysis occur

Answer 25

cytoplasm

Question 26

the first stage of cellular respiration, called ___ takes place in the cytoplasm of the cell and needs no oxygen

Answer 26

glycolysis

Question 27

___ is the reactant in glycolsis

Answer 27

glucose

Question 28

which of the following processes is most efficient (produces the most APT per molecule of glucose)?

Answer 28

aerobic cellular respiration

Question 29

what must pyruvic acid be converted to before it can enter the citric acid cycle

Answer 29

acetyl CoA

Question 30

which of the following is a direct product glycolysis

Answer 30

pyruvic acid

Question 31

why are most energy pyramids limited to three to five levels

Answer 31

there is insufficient energy to support more trophic leveles

Question 32

which of these could be a decomposer

Answer 32

fungus

Question 33

if both a rabbit and a mouse eat grass and both foxes and owls eat rabbits and mice then these relationships would best be described as a

Answer 33

food web

Question 34

which of these represents the correct hierarchical order

Answer 34

organism, population, community, ecosystem

Question 35

energy is used for

Answer 35

active transport

Question 36

which of these organisms covert atmospheric nitrogen gas to a form that can be utilized by plants

Answer 36

bacteria

Question 37

the primary goal is conservation biology is to

Answer 37

counter the loss of biodiversity

Question 38

anything that prevents ATP formation will most likely

Answer 38

result in cell death

Question 39

substances that plug up an enzyme's active site are

Answer 39

enzyme inhibitors

Question 40

enzymes increase the rate of reaction by

Answer 40

decreasing activation energy