Question 1

The primary function of the electron transport chain and oxidative phosphorylation is which of the following?

Accepted Answer

A) To provide electrons and energy for the phosphorylation of ATP 
B) To synthesize the reduced coenzymes necessary for digestion 
C) To oxidize the reduced coenzymes NADH and FADH2,and provide energy for the synthesis of ATP 
D) To transport electrons from ATP to ADP,and synthesize acetyl CoA molecules 
A) To provide electrons and energy for the phosphorylation of ATP 
B) To synthesize the reduced coenzymes necessary for digestion 
C) To oxidize the reduced coenzymes NADH and FADH2,and provide energy for the synthesis of ATP 
D) To transport electrons from ATP to ADP,and synthesize acetyl CoA molecules

Question 2

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 3

Which steps of the citric acid cycle generate CO2?

Accepted Answer

A) Steps 2 and 3 
B) Steps 3 and 4 
C) Steps 4 and 5 
D) Steps 5 and 6 
A) Steps 2 and 3 
B) Steps 3 and 4 
C) Steps 4 and 5 
D) Steps 5 and 6

Question 4

All steps of the citric acid cycle are enzyme catalyzed.

Accepted Answer

A) True 
 B)False

Question 5

The cleavage of a protein with chymotrypsin occurs in stage [1] of catabolism.

Accepted Answer

A) True 
 B)False

Question 6

The primary function of the citric acid cycle in metabolism is to synthesize ATP from the energy produced in the hydrolysis of citric acid.

Accepted Answer

A) True 
 B)False

Question 7

The citric acid cycle comprises stage [4] of metabolism.

Accepted Answer

A) True 
 B)False

Question 8

What is the primary function of the citric acid cycle in metabolism?

Accepted Answer

A) To break down food molecules into smaller components so they can be absorbed by the blood 
B) To synthesize ATP from the energy produced in the hydrolysis of citric acid 
C) To provide the enzymes necessary to aid in the hydrolysis of carbohydrates,proteins,and lipids 
D) To convert acetyl groups to CO2 molecules and provide reduced coenzymes for the electron transport chain 
A) To break down food molecules into smaller components so they can be absorbed by the blood 
B) To synthesize ATP from the energy produced in the hydrolysis of citric acid 
C) To provide the enzymes necessary to aid in the hydrolysis of carbohydrates,proteins,and lipids 
D) To convert acetyl groups to CO2 molecules and provide reduced coenzymes for the electron transport chain

Question 9

Which functional group is not contained in coenzyme A,whose structure is shown below?

Accepted Answer

A) Alcohol 
B) Sulfhydryl 
C) Phosphoester 
D) Amide 
E) Aldehyde 
A) Alcohol 
B) Sulfhydryl 
C) Phosphoester 
D) Amide 
E) Aldehyde

Question 10

Where does energy production occur in animal cells?

Accepted Answer

A) Cell membrane 
B) Cytoplasm 
C) Mitochondria 
D) Nucleus 
A) Cell membrane 
B) Cytoplasm 
C) Mitochondria 
D) Nucleus

Question 11

Each NADH that enters the electron transport chain will result in the formation of ________ units of ATP.

Accepted Answer

A) 10 
B) 2.5 
C) 1.5 
D) 32 
E) 7.3 
A) 10 
B) 2.5 
C) 1.5 
D) 32 
E) 7.3

Question 12

Part [2] of the citric acid cycle includes two separate decarboxylation reactions and a hydrolysis reaction.

Accepted Answer

A) True 
 B)False

Question 13

How many molecules of CO2 are produced for each turn of the citric acid cycle?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 8 
A) 1 
B) 2 
C) 4 
D) 8

Question 14

The primary function of the electron transport chain and oxidative phosphorylation is to provide electrons for the hydrolysis of ATP.

Accepted Answer

A) True 
 B)False

Question 15

How many reactions in the citric acid cycle generate FADH2?

Accepted Answer

A) 0 
B) 1 
C) 3 
D) 8 
A) 0 
B) 1 
C) 3 
D) 8

Question 16

Considering the energy changes associated with the two individual reactions below,what is the energy change associated with the energetically favorable coupled reaction?

Accepted Answer

A) - 11.2 kcal/mol 
B) - 3.4 kcal/mol 
C) - 7.3 kcal/mol 
D) + 3.4 kcal/mol 
E) + 11.2 kcal/mol 
A) - 11.2 kcal/mol 
B) - 3.4 kcal/mol 
C) - 7.3 kcal/mol 
D) + 3.4 kcal/mol 
E) + 11.2 kcal/mol

Question 17

NAD+ and FAD are oxidized in the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 18

Protein digestion begins in the ________.

Accepted Answer

The answer of Protein digestion begins in the ________....

Question 19

Step 6 of the citric acid cycle is shown. Which statement best describes the role of FAD in this reaction?

Accepted Answer

A) FAD causes the reduction of succinate to form fumarate. 
B) FAD causes succinate to undergo hydration to form fumarate. 
C) FAD causes the oxidation of succinate to form fumarate. 
D) FAD causes the isomerication of succinate to form fumarate. 
A) FAD causes the reduction of succinate to form fumarate. 
B) FAD causes succinate to undergo hydration to form fumarate. 
C) FAD causes the oxidation of succinate to form fumarate. 
D) FAD causes the isomerication of succinate to form fumarate.

Question 20

In which stage of catabolism is starch hydrolyzed to glucose with the aid of the enzyme amylase?

Accepted Answer

A) Stage [1] 
B) Stage [2] 
C) Stage [3] 
D) Stage [4] 
A) Stage [1] 
B) Stage [2] 
C) Stage [3] 
D) Stage [4]

Exam 23: Metabolism and Energy Production

The primary function of the electron transport chain and oxidative phosphorylation is which of the following?

What is the classification of the reaction shown?

Which steps of the citric acid cycle generate CO2?

All steps of the citric acid cycle are enzyme catalyzed.

The cleavage of a protein with chymotrypsin occurs in stage [1] of catabolism.

The primary function of the citric acid cycle in metabolism is to synthesize ATP from the energy produced in the hydrolysis of citric acid.

The citric acid cycle comprises stage [4] of metabolism.

What is the primary function of the citric acid cycle in metabolism?

Which functional group is not contained in coenzyme A,whose structure is shown below?

Where does energy production occur in animal cells?

Each NADH that enters the electron transport chain will result in the formation of ________ units of ATP.

Part [2] of the citric acid cycle includes two separate decarboxylation reactions and a hydrolysis reaction.

How many molecules of CO2 are produced for each turn of the citric acid cycle?

The primary function of the electron transport chain and oxidative phosphorylation is to provide electrons for the hydrolysis of ATP.

How many reactions in the citric acid cycle generate FADH2?

Considering the energy changes associated with the two individual reactions below,what is the energy change associated with the energetically favorable coupled reaction?

NAD+ and FAD are oxidized in the electron transport chain.

Protein digestion begins in the ________.

Step 6 of the citric acid cycle is shown. Which statement best describes the role of FAD in this reaction?

In which stage of catabolism is starch hydrolyzed to glucose with the aid of the enzyme amylase?

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

Which steps of the citric acid cycle generate CO₂?

How many molecules of CO₂ are produced for each turn of the citric acid cycle?

How many reactions in the citric acid cycle generate FADH₂?

NAD⁺ and FAD are oxidized in the electron transport chain.