Question 1

Energy is only released during a reaction when a bond is formed, never when it is broken.Which bond is formed during ATP hydrolysis, releasing energy?

Accepted Answer

A)  a C-H bond 
B)  a C-P bond 
C)  a H-O bond 
D)  a P-O bond 
E)  a P=O bond 
A)  a C-H bond 
B)  a C-P bond 
C)  a H-O bond 
D)  a P-O bond 
E)  a P=O bond

Question 2

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 3

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 steps of glycolysis release energy. 
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 steps of glycolysis release energy.

Question 4

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 5

Which choice 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 6

Even though there are more protons in the intermembrane space of the mitochondria, protons do not diffuse from there into the matrix.Why not?

Accepted Answer

A)  The inner mitochondrial membrane is not permeable to them. 
B)  This would require energy. 
C)  Only water diffuses, not protons. 
D)  They are not charged. 
E)  Actually, they do diffuse. 
A)  The inner mitochondrial membrane is not permeable to them. 
B)  This would require energy. 
C)  Only water diffuses, not protons. 
D)  They are not charged. 
E)  Actually, they do diffuse.

Question 7

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

Accepted Answer

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

Question 8

Which of the following pathways results in pyruvate?

Accepted Answer

A)  hydrolysis 
B)  glycolysis 
C)  gluconeogenesis 
D)  the citric acid cycle 
E)  All of these pathways produce pyruvate. 
A)  hydrolysis 
B)  glycolysis 
C)  gluconeogenesis 
D)  the citric acid cycle 
E)  All of these pathways produce pyruvate.

Question 9

The net result of glycolysis is an output of energy in the form of _______ from the catabolism of a single glucose molecule.

Accepted Answer

A)  2 ATPs 
B)  2 NADHs 
C)  4 ATPs 
D)  2 ATPs and 2 NADHs 
E)  4 ATPs and 2 NADHs 
A)  2 ATPs 
B)  2 NADHs 
C)  4 ATPs 
D)  2 ATPs and 2 NADHs 
E)  4 ATPs and 2 NADHs

Question 10

What type of reaction occurs during the electron transport chain?

Accepted Answer

A)  hydrolysis 
B)  condensation 
C)  oxidation-reduction 
D)  esterification 
E)  acetylation 
A)  hydrolysis 
B)  condensation 
C)  oxidation-reduction 
D)  esterification 
E)  acetylation

Question 11

The following figure illustrates a proton gradient.In this figure, protons are indicated by small circles.Which part of the figure has the lower 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 12

Which statement BEST summarizes the first stage of catabolism?

Accepted Answer

A)  Biomolecules are condensed in the first step. 
B)  Biomolecules are hydrolyzed in the first step. 
C)  Biomolecules are reduced in the first step. 
D)  Biomolecules are hydrated in the first step. 
E)  All of the above occur in the first step of metabolism. 
A)  Biomolecules are condensed in the first step. 
B)  Biomolecules are hydrolyzed in the first step. 
C)  Biomolecules are reduced in the first step. 
D)  Biomolecules are hydrated in the first step. 
E)  All of the above occur in the first step of metabolism.

Question 13

What is the last stage of metabolism for glucose, fatty acids, and some amino acids?

Accepted Answer

A)  glycolysis 
B)  β-oxidation 
C)  pyruvate catabolism 
D)  hydrolysis 
E)  the citric acid cycle 
A)  glycolysis 
B)  β-oxidation 
C)  pyruvate catabolism 
D)  hydrolysis 
E)  the citric acid cycle

Question 14

Where does ATP synthase get the energy required to drive phosphorylation of ADP?

Accepted Answer

A)  from the flow of protons from the intermembrane space to the matrix through the inner membrane 
B)  from the flow of protons from the matrix to the intermembrane space through the inner membrane 
C)  from the flow of protons from the intermembrane space to the matrix through the enzyme 
D)  from the flow of protons from the matrix to the intermembrane space through the enzyme 
E)  from ATP 
A)  from the flow of protons from the intermembrane space to the matrix through the inner membrane 
B)  from the flow of protons from the matrix to the intermembrane space through the inner membrane 
C)  from the flow of protons from the intermembrane space to the matrix through the enzyme 
D)  from the flow of protons from the matrix to the intermembrane space through the enzyme 
E)  from ATP

Question 15

Which of the following choices is NOT a common name for the citric acid cycle?

Accepted Answer

A)  CAC 
B)  TCA cycle 
C)  Krebs cycle 
D)  tricarboxylic acid cycle 
E)  All of these are common names of the citric acid cycle. 
A)  CAC 
B)  TCA cycle 
C)  Krebs cycle 
D)  tricarboxylic acid cycle 
E)  All of these are common names of the citric acid cycle.

Question 16

Which statement about glycolysis is FALSE?

Accepted Answer

A)  Glycolysis is the only energy-producing metabolic pathway in the brain. 
B)  Glycolysis requires oxygen. 
C)  Anaerobic microorganisms use glycolysis for energy production. 
D)  Glycolysis is an important biochemical pathway in botulism. 
E)  Glycolysis produces pyruvate from glucose. 
A)  Glycolysis is the only energy-producing metabolic pathway in the brain. 
B)  Glycolysis requires oxygen. 
C)  Anaerobic microorganisms use glycolysis for energy production. 
D)  Glycolysis is an important biochemical pathway in botulism. 
E)  Glycolysis produces pyruvate from glucose.

Question 17

Why is the metabolism of fat sometimes called "burning fat"?

Accepted Answer

A)  The fat is heated. 
B)  Exercise is a painful activity. 
C)  The fat is oxidized. 
D)  Exercise makes a person sweat and feel hot. 
E)  The fat melts. 
A)  The fat is heated. 
B)  Exercise is a painful activity. 
C)  The fat is oxidized. 
D)  Exercise makes a person sweat and feel hot. 
E)  The fat melts.

Question 18

Which statement BEST describes how energetically uphill reactions occur in the body?

Accepted Answer

A)  Reactions that are not energetically uphill do not occur in the body. 
B)  Enzymes make these reactions occur at a reasonable rate. 
C)  The heat of the body drives these reactions. 
D)  They are coupled to energetically downhill reactions such as ATP hydrolysis. 
E)  Uphill reactions occur just like downhill ones do, without any input of energy. 
A)  Reactions that are not energetically uphill do not occur in the body. 
B)  Enzymes make these reactions occur at a reasonable rate. 
C)  The heat of the body drives these reactions. 
D)  They are coupled to energetically downhill reactions such as ATP hydrolysis. 
E)  Uphill reactions occur just like downhill ones do, without any input of energy.

Question 19

A high-energy bond is a bond that

Accepted Answer

A)  releases energy when it is broken. 
B)  is very strong. 
C)  is very stable. 
D)  is weak. 
E)  requires energy to form. 
A)  releases energy when it is broken. 
B)  is very strong. 
C)  is very stable. 
D)  is weak. 
E)  requires energy to form.

Question 20

Cyanide alters the normal relative concentration of protons in the intermembrane space and the matrix of the mitochondria.What is the effect of this change in concentration?

Accepted Answer

A)  The electron transport chain will run out of control. 
B)  NADH cannot be oxidized. 
C)  FADH2 cannot be oxidized. 
D)  ATP cannot be synthesized. 
E)  All of the above are true. 
A)  The electron transport chain will run out of control. 
B)  NADH cannot be oxidized. 
C)  FADH2 cannot be oxidized. 
D)  ATP cannot be synthesized. 
E)  All of the above are true.

Energy is only released during a reaction when a bond is formed, never when it is broken.Which bond is formed during ATP hydrolysis, releasing energy?

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

Which of the following statements about glycolysis is TRUE?

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

Which choice describes the purpose of the following step of glycolysis?

Even though there are more protons in the intermembrane space of the mitochondria, protons do not diffuse from there into the matrix.Why not?

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

Which of the following pathways results in pyruvate?

The net result of glycolysis is an output of energy in the form of _______ from the catabolism of a single glucose molecule.

What type of reaction occurs during the electron transport chain?

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

Which statement BEST summarizes the first stage of catabolism?

What is the last stage of metabolism for glucose, fatty acids, and some amino acids?

Where does ATP synthase get the energy required to drive phosphorylation of ADP?

Which of the following choices is NOT a common name for the citric acid cycle?

Which statement about glycolysis is FALSE?

Why is the metabolism of fat sometimes called "burning fat"?

Which statement BEST describes how energetically uphill reactions occur in the body?

A high-energy bond is a bond that

Cyanide alters the normal relative concentration of protons in the intermembrane space and the matrix of the mitochondria.What is the effect of this change in concentration?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

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Exam 18: Energy and Metabolism

Energy is only released during a reaction when a bond is formed, never when it is broken.Which bond is formed during ATP hydrolysis, releasing energy?

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

Which of the following statements about glycolysis is TRUE?

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

Which choice describes the purpose of the following step of glycolysis?

Even though there are more protons in the intermembrane space of the mitochondria, protons do not diffuse from there into the matrix.Why not?

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

Which of the following pathways results in pyruvate?

The net result of glycolysis is an output of energy in the form of _______ from the catabolism of a single glucose molecule.

What type of reaction occurs during the electron transport chain?

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

Which statement BEST summarizes the first stage of catabolism?

What is the last stage of metabolism for glucose, fatty acids, and some amino acids?

Where does ATP synthase get the energy required to drive phosphorylation of ADP?

Which of the following choices is NOT a common name for the citric acid cycle?

Which statement about glycolysis is FALSE?

Why is the metabolism of fat sometimes called "burning fat"?

Which statement BEST describes how energetically uphill reactions occur in the body?

A high-energy bond is a bond that

Cyanide alters the normal relative concentration of protons in the intermembrane space and the matrix of the mitochondria.What is the effect of this change in concentration?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Filters