Question 1

Where in the cell does oxidative phosphorylation occur?

Accepted Answer

A)  everywhere 
B)  in the ribosomes 
C)  in the mitochondria 
D)  in the cytoplasm 
E)  in the nucleus 
A)  everywhere 
B)  in the ribosomes 
C)  in the mitochondria 
D)  in the cytoplasm 
E)  in the nucleus

Question 2

Which part of the electron transport chain does cyanide inhibit?

Accepted Answer

A)  all of it 
B)  Complex I 
C)  Complex I and III 
D)  Complex II 
E)  the reduction of oxygen 
A)  all of it 
B)  Complex I 
C)  Complex I and III 
D)  Complex II 
E)  the reduction of oxygen

Question 3

What is the purpose of coenzyme A in metabolism?

Accepted Answer

A)  Coenzyme A delivers ADP so that it can be phosphorylated to become ATP. 
B)  Coenzyme A delivers ATP so that it can be dephosphorylated to become ADP. 
C)  Coenzyme A provides the energy for catabolism to occur. 
D)  Coenzyme A transfers electrons to where they need to go. 
E)  Coenzyme A transfers acyl groups. 
A)  Coenzyme A delivers ADP so that it can be phosphorylated to become ATP. 
B)  Coenzyme A delivers ATP so that it can be dephosphorylated to become ADP. 
C)  Coenzyme A provides the energy for catabolism to occur. 
D)  Coenzyme A transfers electrons to where they need to go. 
E)  Coenzyme A transfers acyl groups.

Question 4

Where in the cell does β-oxidation take place?

Accepted Answer

A)  the mitochondria 
B)  the cell membrane 
C)  the cytoplasm 
D)  the nucleus 
E)  everywhere 
A)  the mitochondria 
B)  the cell membrane 
C)  the cytoplasm 
D)  the nucleus 
E)  everywhere

Question 5

Two molecules of carbon dioxide are released for every turn of the citric acid cycle.What happens to those molecules of carbon dioxide?

Accepted Answer

A)  They are used in anabolic processes. 
B)  They stay within the citric acid cycle, contributing to the cyclic nature of the pathway. 
C)  They are exhaled. 
D)  They are excreted in urine. 
E)  They undergo oxidative phosphorylation. 
A)  They are used in anabolic processes. 
B)  They stay within the citric acid cycle, contributing to the cyclic nature of the pathway. 
C)  They are exhaled. 
D)  They are excreted in urine. 
E)  They undergo oxidative phosphorylation.

Question 6

One of the steps of glycolysis is given below.What type of reaction is this?

Accepted Answer

A)  oxidation 
B)  hydration 
C)  hydrogenation 
D)  dehydration 
E)  phosphoryl transfer 
A)  oxidation 
B)  hydration 
C)  hydrogenation 
D)  dehydration 
E)  phosphoryl transfer

Question 7

During ATP hydrolysis, to what molecule is a phosphoryl group transferred?

Accepted Answer

A)  another ATP 
B)  ADP 
C)  AMP 
D)  water 
E)  Pi 
A)  another ATP 
B)  ADP 
C)  AMP 
D)  water 
E)  Pi

Question 8

Generally, how do compounds such as rotenone and cyanide inhibit the electron transport chain?

Accepted Answer

A)  They block electron transfer downstream from the inhibitor-bound enzyme. 
B)  They absorb electrons. 
C)  They are acidic. 
D)  They inhibit the production of proteins involved in the electron transfer chain. 
E)  They increase the rate of electron transfer. 
A)  They block electron transfer downstream from the inhibitor-bound enzyme. 
B)  They absorb electrons. 
C)  They are acidic. 
D)  They inhibit the production of proteins involved in the electron transfer chain. 
E)  They increase the rate of electron transfer.

Question 9

Electrons from _____ enter the electron transport chain where they drive the ________ of ADP to ATP.

Accepted Answer

A)  NADH and FADH2; oxidation 
B)  acetyl CoA; acetylation 
C)  NADH and FADH2; phosphorylation 
D)  acetyl CoA; oxidation 
E)  acetyl CoA; phosphorylation 
A)  NADH and FADH2; oxidation 
B)  acetyl CoA; acetylation 
C)  NADH and FADH2; phosphorylation 
D)  acetyl CoA; oxidation 
E)  acetyl CoA; phosphorylation

Question 10

What are the products of ATP hydrolysis?

Accepted Answer

A)  ADP and Pi 
B)  AMP and Pi 
C)  ADP and water 
D)  AMP and water 
E)  ADP, AMP, Pi, and water 
A)  ADP and Pi 
B)  AMP and Pi 
C)  ADP and water 
D)  AMP and water 
E)  ADP, AMP, Pi, and water

Question 11

Which choice 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 12

Fats, proteins, and carbohydrates are all broken down into __________, the central molecule of metabolism.

Accepted Answer

A)  glucose 
B)  carbon dioxide 
C)  acetyl-coenzyme A 
D)  ATP 
E)  pyruvate 
A)  glucose 
B)  carbon dioxide 
C)  acetyl-coenzyme A 
D)  ATP 
E)  pyruvate

Question 13

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 14

The first step of β-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 15

What is the name of the force that drives the phosphorylation of ADP?

Accepted Answer

A)  gravity 
B)  osmotic pressure 
C)  weak 
D)  electric 
E)  proton motive 
A)  gravity 
B)  osmotic pressure 
C)  weak 
D)  electric 
E)  proton motive

Question 16

Which statement BEST describes the electron transport chain?

Accepted Answer

A)  It is a series of protein complexes that transfer electrons from NADH and FADH2 to oxygen. 
B)  It is another name for the citric acid cycle. 
C)  It is the same thing as catabolism. 
D)  It is cyclic, where the same oxygens are used over and over to transport electrons. 
E)  All of the above describe this chain. 
A)  It is a series of protein complexes that transfer electrons from NADH and FADH2 to oxygen. 
B)  It is another name for the citric acid cycle. 
C)  It is the same thing as catabolism. 
D)  It is cyclic, where the same oxygens are used over and over to transport electrons. 
E)  All of the above describe this chain.

Question 17

The ATP synthesized during catabolic processes is used to provide energy for ____ processes in the cell.

Accepted Answer

A)  oxidative 
B)  anabolic 
C)  slow 
D)  unusual 
E)  downhill 
A)  oxidative 
B)  anabolic 
C)  slow 
D)  unusual 
E)  downhill

Question 18

Which choice 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, energy is stored as ATP. 
D)  In this step, pyruvate is made. 
E)  In this step, both pyruvate and ATP are 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, energy is stored as ATP. 
D)  In this step, pyruvate is made. 
E)  In this step, both pyruvate and ATP are made.

Question 19

Which biomolecules are our normal source of energy?

Accepted Answer

A)  carbohydrates only 
B)  carbohydrates and proteins 
C)  proteins and fats 
D)  carbohydrates and fats 
E)  carbohydrates, fats, and proteins 
A)  carbohydrates only 
B)  carbohydrates and proteins 
C)  proteins and fats 
D)  carbohydrates and fats 
E)  carbohydrates, fats, and proteins

Question 20

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.

Where in the cell does oxidative phosphorylation occur?

Which part of the electron transport chain does cyanide inhibit?

What is the purpose of coenzyme A in metabolism?

Where in the cell does β-oxidation take place?

Two molecules of carbon dioxide are released for every turn of the citric acid cycle.What happens to those molecules of carbon dioxide?

One of the steps of glycolysis is given below.What type of reaction is this?

During ATP hydrolysis, to what molecule is a phosphoryl group transferred?

Generally, how do compounds such as rotenone and cyanide inhibit the electron transport chain?

Electrons from _ enter the electron transport chain where they drive the ____ of ADP to ATP.

What are the products of ATP hydrolysis?

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

Fats, proteins, and carbohydrates are all broken down into __________, the central molecule of metabolism.

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

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

What is the name of the force that drives the phosphorylation of ADP?

Which statement BEST describes the electron transport chain?

The ATP synthesized during catabolic processes is used to provide energy for ____ processes in the cell.

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

Which biomolecules are our normal source of energy?

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

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

Exam 18: Energy and Metabolism

Where in the cell does oxidative phosphorylation occur?

Which part of the electron transport chain does cyanide inhibit?

What is the purpose of coenzyme A in metabolism?

Where in the cell does β-oxidation take place?

Two molecules of carbon dioxide are released for every turn of the citric acid cycle.What happens to those molecules of carbon dioxide?

One of the steps of glycolysis is given below.What type of reaction is this?

During ATP hydrolysis, to what molecule is a phosphoryl group transferred?

Generally, how do compounds such as rotenone and cyanide inhibit the electron transport chain?

Electrons from _____ enter the electron transport chain where they drive the ________ of ADP to ATP.

What are the products of ATP hydrolysis?

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

Fats, proteins, and carbohydrates are all broken down into __________, the central molecule of metabolism.

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

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

What is the name of the force that drives the phosphorylation of ADP?

Which statement BEST describes the electron transport chain?

The ATP synthesized during catabolic processes is used to provide energy for ____ processes in the cell.

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

Which biomolecules are our normal source of energy?

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

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

Electrons from _ enter the electron transport chain where they drive the ____ of ADP to ATP.