Question 1

What is produced by F1F1F1S1F1F1F10-oxidation?

Accepted Answer

A)  acetyl CoA only 
B)  acetyl CoA and ATP 
C)  acetyl CoA, NADH, and FADH?2 
D)  ATP only 
E)  ATP, NADH, and FADH2 
A)  acetyl CoA only 
B)  acetyl CoA and ATP 
C)  acetyl CoA, NADH, and FADH?2 
D)  ATP only 
E)  ATP, NADH, and FADH2

Question 2

What is the product of hydrolysis of a triglyceride in the first step of catabolism?

Accepted Answer

A)  one molecule of glycerol and three fatty acid molecules 
B)  one molecule of glycerol and one fatty acid 
C)  three glucose molecules 
D)  glucose, fatty acids, and glycerol 
E)  Triglycerides do not undergo hydrolysis during catabolism. 
A)  one molecule of glycerol and three fatty acid molecules 
B)  one molecule of glycerol and one fatty acid 
C)  three glucose molecules 
D)  glucose, fatty acids, and glycerol 
E)  Triglycerides do not undergo hydrolysis during catabolism.

Question 3

The first step of F1F1F1S1F1F1F10-oxidation is shown below. What type of reaction is this?

Accepted Answer

A)  oxidation 
B)  reduction 
C)  hydration 
D)  hydrolysis 
E)  hydrogenation 
A)  oxidation 
B)  reduction 
C)  hydration 
D)  hydrolysis 
E)  hydrogenation

Question 4

Which of the following biomolecules provides fuel for the brain?

Accepted Answer

A)  proteins 
B)  steroids 
C)  glucose 
D)  triglycerides 
E)  Any biomolecule can provide fuel for the brain. 
A)  proteins 
B)  steroids 
C)  glucose 
D)  triglycerides 
E)  Any biomolecule can provide fuel for the brain.

Question 5

What occurs during the process known as oxidative phosphorylation?

Accepted Answer

A)  NADH produced during the citric acid cycle is oxidized. 
B)  FADH2 produced during the citric acid cycle is oxidized. 
C)  ADP is phosphorylated to make ATP. 
D)  Oxygen is reduced to water. 
E)  All of the above processes occur. 
A)  NADH produced during the citric acid cycle is oxidized. 
B)  FADH2 produced during the citric acid cycle is oxidized. 
C)  ADP is phosphorylated to make ATP. 
D)  Oxygen is reduced to water. 
E)  All of the above processes occur.

Question 6

How many carbons are removed from a fatty acid each time the fatty acid goes through F1F1F1S1F1F1F10-oxidation?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 7

The following is step 3 of the citric acid cycle. What is the identity of the molecule represented by I?

Accepted Answer

A)  acetate 
B)  GTP 
C)  NADH 
D)  FADH2 
E)  carbon dioxide 
A)  acetate 
B)  GTP 
C)  NADH 
D)  FADH2 
E)  carbon dioxide

Question 8

What is the relationship between the following two intermediates in glycolysis?

Accepted Answer

A)  They are identical. 
B)  They are conformers. 
C)  They are enantiomers. 
D)  They are constitutional isomers. 
E)  They are diastereomers. 
A)  They are identical. 
B)  They are conformers. 
C)  They are enantiomers. 
D)  They are constitutional isomers. 
E)  They are diastereomers.

Question 9

The following figure illustrates a proton gradient. In this figure, protons are indicated by small circles. Which part of the figure has the lowest pH?

Accepted Answer

A)  part I because it has a lower concentration of protons 
B)  part II because it has a lower concentration of protons 
C)  part I because it has a higher concentration of protons 
D)  part II because it has a higher concentration of protons 
E)  They both have the same pH because pH has nothing to do with protons. 
A)  part I because it has a lower concentration of protons 
B)  part II because it has a lower concentration of protons 
C)  part I because it has a higher concentration of protons 
D)  part II because it has a higher concentration of protons 
E)  They both have the same pH because pH has nothing to do with protons.

Question 10

The following is step 3 of the citric acid cycle. During this step, NAD+ is ________, while isocitrate is ________.

Accepted Answer

A)  phosphorylated; isomerized 
B)  isomerized; dehydrated 
C)  oxidized; reduced 
D)  reduced; oxidized 
E)  hydrated; dehydrated 
A)  phosphorylated; isomerized 
B)  isomerized; dehydrated 
C)  oxidized; reduced 
D)  reduced; oxidized 
E)  hydrated; dehydrated

Question 11

Which bond is broken when ATP is hydrolyzed to ADP?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  e 
A)  a 
B)  b 
C)  c 
D)  d 
E)  e

Question 12

Every acetyl CoA molecule that goes through the citric acid cycle provides enough energy to phosphorylate ____ ADP molecules to ATP.

Accepted Answer

A)  10 
B)  5 
C)  1 
D)  100 
E)  0 
A)  10 
B)  5 
C)  1 
D)  100 
E)  0

Question 13

The citric acid cycle is a unique metabolic pathway because it is cyclic. Which statement best describes how it is cyclic?

Accepted Answer

A)  It is cyclic because oxaloacetate is regenerated. 
B)  It is cyclic because FAD and NAD+ are reduced. 
C)  It is cyclic because CO2 is regenerated. 
D)  It is cyclic because it is linked with oxidative phosphorylation. 
E)  All of the above are reasons that the citric acid cycle is cyclic. 
A)  It is cyclic because oxaloacetate is regenerated. 
B)  It is cyclic because FAD and NAD+ are reduced. 
C)  It is cyclic because CO2 is regenerated. 
D)  It is cyclic because it is linked with oxidative phosphorylation. 
E)  All of the above are reasons that the citric acid cycle is cyclic.

Question 14

Which of the following choices is NOT a function of cellular respiration?

Accepted Answer

A)  It converts food and oxygen to CO2 and water. 
B)  It extracts energy from food. 
C)  It stores energy in the form of ATP. 
D)  It builds proteins and synthesizes DNA. 
E)  It reduces coenzymes NAD+ and FAD. 
A)  It converts food and oxygen to CO2 and water. 
B)  It extracts energy from food. 
C)  It stores energy in the form of ATP. 
D)  It builds proteins and synthesizes DNA. 
E)  It reduces coenzymes NAD+ and FAD.

Question 15

Which of the following statements about glycolysis is TRUE?

Accepted Answer

A)  In every step of glycolysis, energy is stored as ATP. 
B)  A phosphate group is on every intermediate. 
C)  Glycolysis is an aerobic process. 
D)  Any sugar can be converted to pyruvate through glycolysis. 
E)  All of the above statements are true. 
A)  In every step of glycolysis, energy is stored as ATP. 
B)  A phosphate group is on every intermediate. 
C)  Glycolysis is an aerobic process. 
D)  Any sugar can be converted to pyruvate through glycolysis. 
E)  All of the above statements are true.

Question 16

Which of the choices below best describes the purpose of the following step of glycolysis?

Accepted Answer

A)  In this step, the molecule is phosphorylated to keep it in the cell. 
B)  In this step, the molecule is split into two, both of which will become pyruvate. 
C)  In this step, NADH is made. 
D)  In this step, energy is stored as ATP. 
E)  In this step, pyruvate is made. 
A)  In this step, the molecule is phosphorylated to keep it in the cell. 
B)  In this step, the molecule is split into two, both of which will become pyruvate. 
C)  In this step, NADH is made. 
D)  In this step, energy is stored as ATP. 
E)  In this step, pyruvate is made.

Question 17

Lactic acid is turned back into pyruvate in the liver. Which statement best describes the body's purpose in making lactic acid from pyruvate in the first place?

Accepted Answer

A)  To cause "the burn" during strenuous exercise. 
B)  To raise the pH of the immediate environment. 
C)  To produce NAD+ for use in glycolysis. 
D)  To produce FADH2 for use in glycolysis. 
E)  To regenerate ADP. 
A)  To cause "the burn" during strenuous exercise. 
B)  To raise the pH of the immediate environment. 
C)  To produce NAD+ for use in glycolysis. 
D)  To produce FADH2 for use in glycolysis. 
E)  To regenerate ADP.

What is produced by -oxidation?

What is the product of hydrolysis of a triglyceride in the first step of catabolism?

The first step of -oxidation is shown below. What type of reaction is this?

Which of the following biomolecules provides fuel for the brain?

What occurs during the process known as oxidative phosphorylation?

How many carbons are removed from a fatty acid each time the fatty acid goes through -oxidation?

The following is step 3 of the citric acid cycle. What is the identity of the molecule represented by I?

What is the relationship between the following two intermediates in glycolysis?

The following figure illustrates a proton gradient. In this figure, protons are indicated by small circles. Which part of the figure has the lowest pH?

The following is step 3 of the citric acid cycle. During this step, NAD⁺ is , while isocitrate is .

Which bond is broken when ATP is hydrolyzed to ADP?

Every acetyl CoA molecule that goes through the citric acid cycle provides enough energy to phosphorylate ____ ADP molecules to ATP.

The citric acid cycle is a unique metabolic pathway because it is cyclic. Which statement best describes how it is cyclic?

Which of the following choices is NOT a function of cellular respiration?

Which of the following statements about glycolysis is TRUE?

Which of the choices below best describes the purpose of the following step of glycolysis?

Lactic acid is turned back into pyruvate in the liver. Which statement best describes the body's purpose in making lactic acid from pyruvate in the first place?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

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Exam 15: Energy and Metabolism

What is produced by -oxidation?

What is the product of hydrolysis of a triglyceride in the first step of catabolism?

The first step of -oxidation is shown below. What type of reaction is this?

Which of the following biomolecules provides fuel for the brain?

What occurs during the process known as oxidative phosphorylation?

How many carbons are removed from a fatty acid each time the fatty acid goes through -oxidation?

The following is step 3 of the citric acid cycle. What is the identity of the molecule represented by I?

What is the relationship between the following two intermediates in glycolysis?

The following figure illustrates a proton gradient. In this figure, protons are indicated by small circles. Which part of the figure has the lowest pH?

The following is step 3 of the citric acid cycle. During this step, NAD+ is ________, while isocitrate is ________.

Which bond is broken when ATP is hydrolyzed to ADP?

Every acetyl CoA molecule that goes through the citric acid cycle provides enough energy to phosphorylate ____ ADP molecules to ATP.

The citric acid cycle is a unique metabolic pathway because it is cyclic. Which statement best describes how it is cyclic?

Which of the following choices is NOT a function of cellular respiration?

Which of the following statements about glycolysis is TRUE?

Which of the choices below best describes the purpose of the following step of glycolysis?

Lactic acid is turned back into pyruvate in the liver. Which statement best describes the body's purpose in making lactic acid from pyruvate in the first place?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Filters

The following is step 3 of the citric acid cycle. During this step, NAD⁺ is , while isocitrate is .