Chapter 6

Question 1

The process whereby cells completely break down glucose to CO2 and water for energy is

Answer 1

cellular respiration

Question 2

The final acceptor molecule in the electron transport system is

Answer 2

oxygen

Question 3

Which of the following processes produces 2 ATP, 6 NADH, and 2 FADH2 after 2 turns?
A) electron transport system
B) glycolysis
C) pyruvate oxidation
D) calvin cycle
E) citric acid (Krebs) cycle

Answer 3

E, citric acid (Krebs) cycle

Question 4

The anaerobic process where oxygen is not available to cells and lactic acid if formed is

Answer 4

fermentation

Question 5

Most of the ATP in aerobic respiration is produced directly from membrane gradients created by

Answer 5

the electron transport chain

Question 6

Which of these reaction ends with pyruvic acid?
A) glycolysis
B) calvin cycle
C) citric acid (Krebs) cycle
D) pyruvate oxidation
E) electron transport system

Answer 6

A, glycolysis

Question 7

In yeast fermentation

Answer 7

alcohol and carbon dioxide are given off

Question 8

After two complete turns of the citric acid (Krebs) cycle, the results are

Answer 8

4 molecules of CO2, and 2 ATP molecules

Question 9

In a eukaryotic cell, the electron transport chain functions within the

Answer 9

mitochondrion

Question 10

A redox reaction can easily be explained as

Answer 10

transferring electrons between reactants

Question 11

The first stage of cellular respiration occurs in the

Answer 11

cytosol

Question 12

How many glucose molecules would have to go through glycolysis in order to have a net gain of six ATP

Answer 12

3

Question 13

A compound that loses electrons is

Answer 13

oxidized

Question 14

The primary role of O2 in cellular respiration is to

Answer 14

combine with electrons and hydrogen ions, forming water

Question 15

In a human cell, how many ATP are generated from a single glucose molecule at the end of aerobic cellular respiration?

Answer 15

36

Question 16

In yeast cells
A) alcohol is produced during the citric acid cycle
B) lactic acid is produced during anaerobic respiration
C) lactic acid is produced during glycolysis
D) alcohol is produced after glycolysis

Answer 16

D, alcohol is produced after glycolysis

Question 17

The Krebs cycle happens just before

Answer 17

oxidative phosphorylation

Question 18

How do cells capture the energy released by cellular respiration

Answer 18

They produce ATP

Question 19

During cellular respiration, the energy in glucose

Answer 19

is carried by electorns

Question 20

The passing of electrons through the electron transport chain is similar to

Answer 20

A slinky toy going down a flight of stairs

Question 21

At the end of the Krebs cycle, most of the energy remaining from the original glucose is stored in

Answer 21

NADH

Question 22

By-products of cellular respiration include

Answer 22

Carbon dioxide and water

Question 23

Rotenone is a common insecticide. It binds tightly with one of the electron carrier molecules in the electron transport chain, preventing electrons from passing to the next carrier molecule. Insects exposed to rotenone will die because:

Answer 23

They will no longer be able to produce enough ATP

Question 24

NADH pills can be purchased over the counter and are often taken by sufferers of chronic fatigue syndrome (CFS). How might these pills benefit a CFS patient?

Answer 24

They would increase the number of electrons provided to the electron transport chian