Chapters 9&10

Question 1

Catabolic pathways are

Answer 1

metabolic pathways that release stored energy by breaking down complex molecules

Question 2

During cellular respiration

Answer 2

glucose is oxidized and oxygen is reduced

Question 3

During an oxidation-reduction

Answer 3

reaction glucose loses a hydrogen atom and the molecule is oxidized

Question 4

NAD+ is reduced to NADH during

Answer 4

both glycolysis and the citric cycle

Question 5

Glycolysis takes place

Answer 5

in the cytosol

Question 6

Substrate level phosphorylation generate

Answer 6

the ATP that is made during glycolysis

Question 7

Oxygen consumed during cellular respiration is involved

Answer 7

in the accepting of electrons at the end of the electron
transport chain

Question 8

Glycolysis in eukaryotic cells will take place

Answer 8

whether or not oxygen is present

Question 9

When an electron shifts to a more electronegative atom it

Answer 9

loses potential energy

Question 10

When glucose is catabolized to a pyruvate its energy

Answer 10

is retained by the pyruvate

Question 11

The end products of glycolysis are

Answer 11

ATP, NADH and pyruvate

Question 12

When a molecule is phosphorylated it has

Answer 12

an increased chemical activity and is primed to do cellular work

Question 13

Glycolysis uses and forms a

Answer 13

stored ATP ( the “investment phase”) and forms a net increase in ATP (the “payoff phase”)

Question 14

When a pyruvate is catabolized in the citric cycle it follows

Answer 14

3 steps which result in the formation of acetyl CoA, NADH,
H+, and CO2

Question 15

The oxidation of one pyruvate molecule will

Answer 15

feed 2 carbon atoms into the citric acid cycle

Question 16

12 NADH+FADH2 molecules are produced

Answer 16

for each molecule of glucose metabolized by glycolysis and the citric cycle

Question 17

During aerobic respiration electrons travel down hill following the sequence:

Answer 17

food,NADH,electron transport
chain,oxygen

Question 18

The mitochondrial inner membrane is where

Answer 18

where the protons of the electron transport chain are located

Question 19

Oxidative phosphorylation (chemiosmosis) produced the most ATP when

Answer 19

glucose is completely oxidized to CO2 and H2O

Question 20

The complete oxidation of 2 molecules of glucose can produce

Answer 20

72 to 76 ATP

Question 21

Glycolysis occurs whether or not

Answer 21

oxygen is present

Question 22

Glycolysis is found in both

Answer 22

cellular respiration and fermentation

Question 23

The reduction of acetaldehyde to ethanol is result of

Answer 23

NAD+ being regenerated from NADH

Question 24

Both alcohol fermentation and lactic acid fermentation oxidize

Answer 24

NADH to NAD+

Question 25

Potassium ions increase causing

Answer 25

muscle fatigue when muscle cells undergo anaerobic respiration

Question 26

Plant cells use their mitochondria for

Answer 26

oxidation of pyruvate in photosynthesizing cells in dark periods and in other tissues
all the time

Question 27

The Calvin cycle takes place in the

Answer 27

stroma of the chloroplast

Question 28

Many pigments can absorb light during

Answer 28

photosynthesis

Question 29

In photosystem II the electron vacancies in P680 are filled by

Answer 29

electrons derived from water

Question 30

Photosystem I receives electrons from

Answer 30

plastocyanin

Question 31

Chemiosmotic process in chloroplasts establishes the

Answer 31

proton gradient

Question 32

During respiration the reduction of oxygen

Answer 32

forms water

Question 33

During photosynthesis there is a reduction of

Answer 33

NADP+

Question 34

The splitting of CO2 to form O2 DOES NOT occur

Answer 34

during photosynthesis or respiration

Question 35

Both photosynthesis and respiration generate

Answer 35

proton gradients across membranes

Question 36

Wavelength of light and _ are inversely related

Answer 36

quantity of energy per photon are inversely related

Question 37

Carotenoids dissipate

Answer 37

excessive light energy

Question 38

The Calvin cycle synthesizes

Answer 38

simple sugars from carbon dioxide

Question 39

The light reactions of photosynthesis supply the

Answer 39

Calvin cycle with ATP and NADPH

Question 40

Photosynthesis is similar in

Answer 40

C4 and CAM plants because rubisco is not used to fix carbon initially

Question 41

The Calvin cycle does NOT

Answer 41

Release oxygen