chapter 7

Mader's Concepts in Biology, First Edition

Copyright © The McGraw-Hill Companies, InC) Permission required for reproduction or display.

Sylvia S. Mader

Chapter 7

Question 1

When did ATP make its appearance on the planet Earth?

A. 0.5 billion years ago

B. 1.5 billion years ago

C. 2.5 billion years ago

D. 3.5 billion years ago

E. 4.5 billion years ago

Question 2

Which of the following are the end products for cellular respiration?

A. glucose and carbon dioxide

B. glucose and water

C. glucose and oxygen

D. oxygen and carbon dioxide

E. carbon dioxide and water

Question 3

A biologist is studying the reactants in the overall equation for cellular respiration. He or she would be studying which of the following molecules?

A. glucose and waterB. carbon dioxide and waterC. oxygen and glucoseD. carbon dioxide and glucoseE. water and oxygen

Question 4

Which of the following are coenzymes which assist in cellular respiration?

A. FAD and RuBP

B. NAD and FAD

C. NAD and RuBP

D. NAD and ATP synthase

E. FAD and ATP synthase

Question 5

The order of the major pathways and reactions of cellular respiration is:

A. glycolysis-preparatory reaction-citric acid cycle-electron transport chain

B. electron transport chain-glycolysis-preparatory reaction-citric acid cycle

C. glycolysis-electron transport chain-preparatory reaction-citric acid cycle

D. citric acid cycle-glycolysis-preparatory reaction-electron transport chain

E. glycolysis-preparatory reaction-citric acid cycle-electron transport chain

Question 6

Which of the following phases takes place outside the mitochondria and is considered to be anaerobic?

A. electron transport chain

B. preparatory reaction

C. glycolysis

D. citric acid cycle

E. chemiosmosis

Question 7

The conversion of pyruvate into a 2-carbon acetyl group is carried out during which of the following phases?

A. electron transport chain

B. preparatory reaction

C. glycolysis

D. citric acid cycle

E. chemiosmosis

Question 8

During glycolysis, what is the net yield of ATP?

A. no ATP

B. 4 ATP

C. 2 ATP

D. 6 ATP

E. 10 ATP

Question 9

In which of the following events of cellular respiration is no ATP produced?

A. the electron transport chain

B. glycolysis

C. the citric acid cycle

D. the preparatory reaction

E. chemiosmosis

Question 10

The molecule NAD is said to have an oxidative role in the process of glycolysis because they:

A. accept phosphate atoms

B. accept oxygen atoms

C. accept carbon dioxide molecules

D. accept electrons and hydrogen atoms

E. accept pyruvate molecules

Question 11

When an enzyme is used to convert ADP into ATP it is referred to as:

A. enzyme ATP synthesis

B. active site ATP synthesis

C. substrate-level ATP synthesis

D. enzyme ADP synthesis

E. substrate-level ADP synthesis

Question 12

Pyruvate is converted to a two-carbon acetyl group attached to coenzyme A (CoA), and carbon dioxide is given off during which phase of cellular respiration?

A. chemiosmosisB. preparatory reactionC. the electron transport chainD. anaerobic respirationE. glycolysis

Question 13

Which is not true of the preparatory reaction of cellular respiration?

A. it connects glycolysis to the citric acid cycleB. carbon dioxide is given offC. pyruvate is converted to a two-carbon acetyl

groupD. NAD is converted to NADHE. the reaction occurs once per glucose

molecule

Question 14

What is the significance of the cristae in the mitochondria?

A. increase surface area therefore increasing glycolysisB. increase surface area therefore increasing the citric

acid cycleC. increase surface area therefore increasing the

preparatory reactionD. increase surface area therefore increasing

fermentationE. increase surface area therefore increasing the

electron transport chain

Question 15

A chemist is studying the carriers involved in the electron transport chain. Which of the following molecules would he or she be studying?

A. pyruvate moleculesB. acetyl groupsC. cytochrome moleculesD. NADH molecules

E. FADH2 molecules

Question 16

During the process of cellular respiration, what is the total number of ATP produced per glucose molecule?

A. 36 or 38

B. 32 or 34

C. 28 or 30

D. 24 or 26

E. 20 or 24

Question 17

How much of the available energy stored in glucose is converted to ATP?

A. 68%

B. 7%

C. 26%

D. 50%

E. 39%

Question 18

What would be the result if oxygen became unavailable to the cell?

A. glycolysis would stop

B. the citric acid cycle would stop

C. the electron transport chain would stop

D. the preparatory reaction would stop

E. substrate-level ATP synthesis would stop

Question 19

Per glucose molecule, the citric acid cycle occurs four times.

A. true

B. false

Question 20

A biologist is studying where most of the energy from cellular respiration comes from. The biologist would be studying which of the following phases?

A. glycolysisB. fermentationC. the citric acid cycleD. the electron transport chainE. the preparatory reaction