Question 1

The final stage of the electron transport chain forms water in an anaerobic process.

Accepted Answer

A) True 
 B)False  False

Question 2

Two electrons are donated by each NADH in the electron transport chain.

Accepted Answer

A) True 
 B)False  True

Question 3

Coenzyme A is synthesized in cells from pantothenic acid, vitamin B5.

Accepted Answer

A) True 
 B)False  True

Question 4

The cells in heart tissue have more mitochondria than the cells in bone tissue.

Accepted Answer

A) True 
 B)False

Question 5

Anabolism is an energy releasing process that involves the synthesis of large molecules from smaller ones.

Accepted Answer

A) True 
 B)False

Question 6

Which statement concerning the digestion of food groups is incorrect?

Accepted Answer

A) Carbohydrates are ultimately broken down to glucose and other monosaccharides. 
B) Triacylglycerols are ultimately broken down by lipases into glycerol and fatty acids. 
C) Proteins are ultimately broken down by proteases into amino acids. 
D) Polysaccharides are ultimately broken down to nucleotides. 
A) Carbohydrates are ultimately broken down to glucose and other monosaccharides. 
B) Triacylglycerols are ultimately broken down by lipases into glycerol and fatty acids. 
C) Proteins are ultimately broken down by proteases into amino acids. 
D) Polysaccharides are ultimately broken down to nucleotides.

Question 7

Oxaloacetate is the starting material in the first step of the citric acid cycle and the product of the last step. The last step of the citric acid cycle, the oxidation of malate to oxaloacetate, is shown. What is the structure of oxaloacetate?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

Which intermediate in the citric acid cycle contains two chirality centers?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 9

Any process, such as walking, running, swallowing, or breathing, is fueled by the release of energy from the phosphorylation of ADP to ATP.

Accepted Answer

A) True 
 B)False

Question 10

Within the cell, energy production occurs in the matrix of the mitochondrion.

Accepted Answer

A) True 
 B)False

Question 11

The reaction shown below requires the overall input of energy.

Accepted Answer

A) True 
 B)False

Question 12

The addition of a phosphate group to ADP, forming ATP, is an example of what type of reaction?

Accepted Answer

A) hydration 
B) hydrolysis 
C) phosphorylation 
D) reduction 
E) decarboxylation 
A) hydration 
B) hydrolysis 
C) phosphorylation 
D) reduction 
E) decarboxylation

Question 13

Which is not a reaction found in stage [2] of catabolism?

Accepted Answer

A) fatty acid oxidation 
B) glycolysis 
C) oxidative phosphorylation 
D) amino acid catabolism 
A) fatty acid oxidation 
B) glycolysis 
C) oxidative phosphorylation 
D) amino acid catabolism

Question 14

The conversion of Fe3+ to Fe2+ in the electron transport chain is an example of Fe3+ acting as an oxidizing agent.

Accepted Answer

A) True 
 B)False

Question 15

How much ATP is generated for each acetyl CoA during stages [3] and [4] of catabolism?

Accepted Answer

A) 4 molecules of ATP 
B) 5 molecules of ATP 
C) 8 molecules of ATP 
D) 10 molecules of ATP 
E) 16 molecules of ATP 
A) 4 molecules of ATP 
B) 5 molecules of ATP 
C) 8 molecules of ATP 
D) 10 molecules of ATP 
E) 16 molecules of ATP

Question 16

What is the classification of the reaction shown?

Accepted Answer

A) redox 
B) isomerization 
C) decarboxylation 
D) hydrolysis 
A) redox 
B) isomerization 
C) decarboxylation 
D) hydrolysis

Question 17

Which is an oxidizing agent?

Accepted Answer

A) Fe2+ 
B) NAD+ 
C) FADH2 
D) ATP 
A) Fe2+ 
B) NAD+ 
C) FADH2 
D) ATP

Question 18

_____ is a coenzyme synthesized in cells from vitamin B2, riboflavin.

Accepted Answer

Question 19

Coenzyme A is a biological oxidizing agent used to convert alcohols to carbonyl-containing compounds.

Accepted Answer

A) True 
 B)False

Question 20

Each NADH enters the electron transport chain at complex I in the inner mitochondrial membrane and the resulting cascade of reactions produces enough energy to synthesize 4 ATPs.

Accepted Answer

A) True 
 B)False

Exam 23: Digestion and the Conversion of Food Into Energy

The final stage of the electron transport chain forms water in an anaerobic process.

Two electrons are donated by each NADH in the electron transport chain.

Coenzyme A is synthesized in cells from pantothenic acid, vitamin B5.

The cells in heart tissue have more mitochondria than the cells in bone tissue.

Anabolism is an energy releasing process that involves the synthesis of large molecules from smaller ones.

Which statement concerning the digestion of food groups is incorrect?

Oxaloacetate is the starting material in the first step of the citric acid cycle and the product of the last step. The last step of the citric acid cycle, the oxidation of malate to oxaloacetate, is shown. What is the structure of oxaloacetate?

Which intermediate in the citric acid cycle contains two chirality centers?

Any process, such as walking, running, swallowing, or breathing, is fueled by the release of energy from the phosphorylation of ADP to ATP.

Within the cell, energy production occurs in the matrix of the mitochondrion.

The reaction shown below requires the overall input of energy.

The addition of a phosphate group to ADP, forming ATP, is an example of what type of reaction?

Which is not a reaction found in stage [2] of catabolism?

The conversion of Fe3+ to Fe2+ in the electron transport chain is an example of Fe3+ acting as an oxidizing agent.

How much ATP is generated for each acetyl CoA during stages [3] and [4] of catabolism?

What is the classification of the reaction shown?

Which is an oxidizing agent?

_____ is a coenzyme synthesized in cells from vitamin B2, riboflavin.

Coenzyme A is a biological oxidizing agent used to convert alcohols to carbonyl-containing compounds.

Each NADH enters the electron transport chain at complex I in the inner mitochondrial membrane and the resulting cascade of reactions produces enough energy to synthesize 4 ATPs.

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes, Reaction Rates, and Equilibrium

Gases, Liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen, Halogen, or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids, Esters, and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Carbohydrate, Lipid, and Protein Metabolism

Filters

Coenzyme A is synthesized in cells from pantothenic acid, vitamin B₅.

The conversion of Fe³⁺ to Fe²⁺ in the electron transport chain is an example of Fe³⁺ acting as an oxidizing agent.

_____ is a coenzyme synthesized in cells from vitamin B₂, riboflavin.