Chapter 9

Question 1

What’s the difference between cellular respiration and fermentation?

Answer 1

Fermentation doesn’t use oxygen while cellular respiration does

Question 2

Loses electrons

Answer 2

Oxidation

Question 3

Gains electrons

Answer 3

Reduction

Question 4

What happens to the energy when compounds lose electrons? Gain?

Answer 4

Lose; gain

Question 5

What electron carrier is hydrogen transferred to first?

Answer 5

NAD

Question 6

An organic molecule that acts as a cofactor

Answer 6

Coenzyme

Question 7

What happens when NAD is reduced?

Answer 7

The enzyme delivers 2 electrons and 1 proton to form NADH

Question 8

Is NAD oxidized or reduced?

Answer 8

Oxidized

Question 9

Does NADH have a higher or lower potential energy?

Answer 9

Higher

Question 10

Is NADH oxidized or reduced?

Answer 10

Reduced

Question 11

Does NAD have a higher or lower potential energy?

Answer 11

Lower

Question 12

Moves electrons down a series of redox reactions that release energy used to make ATP

Answer 12

Electron transport chain

Question 13

Where is electron transport found in eukaryotic cells? Prokaryotic?

Answer 13

Mitochondria membrane, cell membrane

Question 14

What is the final electron acceptor?

Answer 14

oxygen

Question 15

What is the pathway of electrons in cellular respiration?

Answer 15

Glucose, NADH, electron transport chain, oxygen

Question 16

Breaks glucose into 2 molecules of pyruvate

Answer 16

Glycolysis

Question 17

Production of ATP using energy derived from the redox reaction of an electron transport chain

Answer 17

Oxidative phosphorylation

Question 18

Energy released during a reaction, such as the breakdown of sugar molecules, is used directly to synthesize ATP. Small amount of energy is generated

Answer 18

Substrate Level

Question 19

Where is glycolysis taking place?

Answer 19

Cytosol

Question 20

Why is oxygen the ultimate electron acceptor?

Answer 20

It’s extremely electronegative

Question 21

What are the 2 electron carrier molecules that feed electrons into the electron transport system?

Answer 21

NADH, FADH2

Question 22

What must be supplied for aerobic respiration to continue?

Answer 22

NAD

Question 23

What are the reactants of cellular respiration?

Answer 23

Glucose and oxygen

Question 24

What are the products of cellular respiration?

Answer 24

Water, ATP, carbon dioxide

Question 25

Which phases of cellular respiration occur in the mitochondria?

Answer 25

Krebs, oxidative phosphorylation, link

Question 26

What phases require oxygen?

Answer 26

Oxidative phosphorylation

Question 27

What phase produces carbon dioxide?

Answer 27

Krebs, link

Question 28

What phase produces water?

Answer 28

Oxidative phosphorylation

Question 29

What phases produce ATP?

Answer 29

Krebs, glycolysis, oxidative phosphorylation

Question 30

How many ATPs are being produced for every glucose undergoing cellular respiration?

Answer 30

38

Question 31

What happens to the amount of NAD if only glycolysis was occuring?

Answer 31

NAD will run out

Question 32

What does the presence of lactic acid indicate about what process is occuring?

Answer 32

Glycolysis

Question 33

What molecules acts as an electron acceptor in glycolysis?

Answer 33

NADH

Question 34

Is the pyruvate likely to move across the mitochondrial membrane by diffusion?

Answer 34

No because it's polar

Question 35

How many acetyl-CoA, carbon dioxide, and NADH are produced in the link reaction for each glucose molecule?

Answer 35

2