Question 1

In electron transport, the oxidized product from the reaction of CoQ + NADH + H+ is

Accepted Answer

A) CoQ. 
B) CoQH2. 
C) FADH. 
D) FAD. 
E) NAD+. 
A) CoQ. 
B) CoQH2. 
C) FADH. 
D) FAD. 
E) NAD+.

Question 2

In the chemiosmotic model of oxidative phosphorylation, ATP is synthesized as

Accepted Answer

A) OH- flows through ATP synthase. 
B) electrons flow through ATP synthase. 
C) Ca2+ flows through ATP synthase. 
D) H+ flows through ATP synthase. 
E) Na+ flows through ATP synthase. 
A) OH- flows through ATP synthase. 
B) electrons flow through ATP synthase. 
C) Ca2+ flows through ATP synthase. 
D) H+ flows through ATP synthase. 
E) Na+ flows through ATP synthase.

Question 3

In this figure, depicting part 1 of the Citric Acid Cycle, taken from your text, identify the substances numbered.  
-Substance 14

Accepted Answer

The answer of In this figure, depicting part 1 of...

Question 4

In electron transport, NADH and FADH2 are used to provide

Accepted Answer

A) oxygen. 
B) electrons and hydrogen ions. 
C) carbon atoms. 
D) water and carbon dioxide. 
E) thiol groups. 
A) oxygen. 
B) electrons and hydrogen ions. 
C) carbon atoms. 
D) water and carbon dioxide. 
E) thiol groups.

Question 5

The citric acid cycle step that removes the first CO2 molecule is a(n)

Accepted Answer

A) oxidative decarboxylation. 
B) reduction. 
C) carbonylation. 
D) hydrolysis. 
E) combination. 
A) oxidative decarboxylation. 
B) reduction. 
C) carbonylation. 
D) hydrolysis. 
E) combination.

Question 6

In the first reaction of the citric acid cycle

Accepted Answer

A) glucose becomes pyruvate. 
B) ATP is produced. 
C) NADH is produced. 
D) acetyl CoA reacts with oxaloacetate to give citrate. 
E) pyruvate becomes CO2 and H2O. 
A) glucose becomes pyruvate. 
B) ATP is produced. 
C) NADH is produced. 
D) acetyl CoA reacts with oxaloacetate to give citrate. 
E) pyruvate becomes CO2 and H2O.

Question 7

Which is the best choice for the box labeled "Answer" in the illustration below?

Accepted Answer

A) oxidized carrier B 
B) carbon dioxide 
C) OH- 
D) reduced carrier BH2 
E) energy 
A) oxidized carrier B 
B) carbon dioxide 
C) OH- 
D) reduced carrier BH2 
E) energy

Question 8

When combined with electron transport, one turn of the citric acid cycle produces ________ ATP.

Accepted Answer

A) 24 
B) 12 
C) 10 
D) 14 
E) 2 
A) 24 
B) 12 
C) 10 
D) 14 
E) 2

Question 9

The conversion of ATP to ADP and inorganic phosphate produces 7.3 kcal/mole of energy.

Accepted Answer

A) True 
 B)False

Question 10

In electron transport, the three protein complexes (I, III, and IV)

Accepted Answer

A) act as proton pumps, which generate a proton gradient. 
B) transfer electrons from NAD+ to O2. 
C) transfer electrons from FAD to O2. 
D) act as electron pumps, which generate an electron gradient. 
E) act as Ca2+ pumps, which generate a Ca2+ gradient. 
A) act as proton pumps, which generate a proton gradient. 
B) transfer electrons from NAD+ to O2. 
C) transfer electrons from FAD to O2. 
D) act as electron pumps, which generate an electron gradient. 
E) act as Ca2+ pumps, which generate a Ca2+ gradient.

Question 11

Another name for the citric acid cycle is

Accepted Answer

A) electron transport. 
B) glycolysis. 
C) the tricarboxylic acid (TC
A) cycle. 
D) glucolysis. 
E) the transamination pathway. 
A) electron transport. 
B) glycolysis. 
C) the tricarboxylic acid (TC
A) cycle. 
D) glucolysis. 
E) the transamination pathway.

Question 12

The last step in the citric acid cycle converts malate to

Accepted Answer

A) citrate. 
B) isocitrate. 
C) succinate. 
D) fumarate. 
E) oxaloacetate. 
A) citrate. 
B) isocitrate. 
C) succinate. 
D) fumarate. 
E) oxaloacetate.

Question 13

In this figure depicting the Stages of Metabolism taken from your text, identify the metabolic substance numbered.  
-Process 10

Accepted Answer

The answer of In this figure depicting the Stages of...

Question 14

Which of the following is the net reaction for one turn of the citric acid cycle?

Accepted Answer

A) Acetyl CoA + 3 NAD+ + FAD + GDP + Pi + 2H2O → 2CO2 + 3 NADH + 3 H+ + FADH2 + HS - CoA + GTP 
B) Pyruvate + 3 NAD+ + FAD + GDP + Pi + 2H2O → 3 CO2 + 3 NADH + 3 H+ + FADH2 + GTP 
C) Acetyl CoA + NAD+ + FAD + GDP + Pi → 2 CO2 + NADH + H+ + FADH2 + HS - CoA + GTP 
D) Glucose + 2 NAD+ + 2GDP + 2 Pi + 2H2O → 2Pyruvate + 2 NADH + 2 H+ + GTP 
E) Glucose + 2GDP + 2 Pi → 2Lactate + 2GTP 
A) Acetyl CoA + 3 NAD+ + FAD + GDP + Pi + 2H2O → 2CO2 + 3 NADH + 3 H+ + FADH2 + HS - CoA + GTP 
B) Pyruvate + 3 NAD+ + FAD + GDP + Pi + 2H2O → 3 CO2 + 3 NADH + 3 H+ + FADH2 + GTP 
C) Acetyl CoA + NAD+ + FAD + GDP + Pi → 2 CO2 + NADH + H+ + FADH2 + HS - CoA + GTP 
D) Glucose + 2 NAD+ + 2GDP + 2 Pi + 2H2O → 2Pyruvate + 2 NADH + 2 H+ + GTP 
E) Glucose + 2GDP + 2 Pi → 2Lactate + 2GTP

Question 15

The citric acid cycle takes place in the

Accepted Answer

A) mitochondria. 
B) cytosol. 
C) cytoplasm. 
D) Golgi apparatus. 
E) endoplasmic reticulum. 
A) mitochondria. 
B) cytosol. 
C) cytoplasm. 
D) Golgi apparatus. 
E) endoplasmic reticulum.

Question 16

During the first reaction in the citric acid cycle,

Accepted Answer

A) HS- CoA is released. 
B) acetyl CoA is made. 
C) a decarboxylation occurs. 
D) a decomposition occurs. 
E) ATP is synthesized. 
A) HS- CoA is released. 
B) acetyl CoA is made. 
C) a decarboxylation occurs. 
D) a decomposition occurs. 
E) ATP is synthesized.

Question 17

The energy released during electron transport is used to produce

Accepted Answer

A) glucose. 
B) citric acid. 
C) carbon dioxide. 
D) ATP. 
E) NADH. 
A) glucose. 
B) citric acid. 
C) carbon dioxide. 
D) ATP. 
E) NADH.

Question 18

When oxygen is in plentiful supply in the cell, pyruvate is converted to

Accepted Answer

A) CoA. 
B) acetyl CoA. 
C) glucose. 
D) lactate. 
E) fructose. 
A) CoA. 
B) acetyl CoA. 
C) glucose. 
D) lactate. 
E) fructose.

Question 19

In this figure depicting the Stages of Metabolism taken from your text, identify the metabolic substance numbered.  
-Process 9

Accepted Answer

citric acid cycle or

Question 20

In order to enter the citric acid cycle, pyruvate is first converted to

Accepted Answer

A) ate. 
B) acetaldehyde. 
C) citrate. 
D) acetyl CoA. 
E) ethanol. 
A) ate. 
B) acetaldehyde. 
C) citrate. 
D) acetyl CoA. 
E) ethanol.

Exam 23: Metabolism and Energy Production

In electron transport, the oxidized product from the reaction of CoQ + NADH + H+ is

In the chemiosmotic model of oxidative phosphorylation, ATP is synthesized as

In this figure, depicting part 1 of the Citric Acid Cycle, taken from your text, identify the substances numbered. -Substance 14

In electron transport, NADH and FADH2 are used to provide

The citric acid cycle step that removes the first CO2 molecule is a(n)

In the first reaction of the citric acid cycle

Which is the best choice for the box labeled "Answer" in the illustration below?

When combined with electron transport, one turn of the citric acid cycle produces ________ ATP.

The conversion of ATP to ADP and inorganic phosphate produces 7.3 kcal/mole of energy.

In electron transport, the three protein complexes (I, III, and IV)

Another name for the citric acid cycle is

The last step in the citric acid cycle converts malate to

In this figure depicting the Stages of Metabolism taken from your text, identify the metabolic substance numbered. -Process 10

Which of the following is the net reaction for one turn of the citric acid cycle?

The citric acid cycle takes place in the

During the first reaction in the citric acid cycle,

The energy released during electron transport is used to produce

When oxygen is in plentiful supply in the cell, pyruvate is converted to

In this figure depicting the Stages of Metabolism taken from your text, identify the metabolic substance numbered. -Process 9

In order to enter the citric acid cycle, pyruvate is first converted to

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In electron transport, the oxidized product from the reaction of CoQ + NADH + H⁺ is

In electron transport, NADH and FADH₂ are used to provide

The citric acid cycle step that removes the first CO₂ molecule is a(n)