Question 1

The energy released by _________ reactions is used to regenerate _______ which can then provide energy for __________ reactions.

Accepted Answer

A)   anabolic, ATP, catabolic
B)   anabolic, NADH, catabolic
C)   catabolic, ATP, anabolic
D)   catabolic, glucose, anabolic

Question 2

Which of these enzymes is NOT an exoenzyme?

Accepted Answer

A)   ATP synthase
B)   streptokinase
C)   penicillinase
D)   collagenase
E)   elastase

Question 3

ATP is composed of deoxyribose, adenine, and 3 phosphate groups.

Accepted Answer

A) True 
 B)False

Question 4

ATP synthase is a complex enzyme needed for oxidative phosphorylation.

Accepted Answer

A) True 
 B)False

Question 5

All organisms that are photosynthetic are oxygenic.

Accepted Answer

A) True 
 B)False

Question 6

The majority of reduced NAD is produced in

Accepted Answer

A)   glycolysis.
B)   Krebs cycle.
C)   the electron transport chain.
D)   photosynthesis.

Question 7

The step involving ATP, hexokinase and the phosphorylation of glucose to glucose-6-phosphate is

Accepted Answer

A)   the final step of the Krebs cycle.
B)   the first redox reaction of the electron transport system.
C)   an example of oxidative phosphorylation.
D)   an example of substrate-level phosphorylation.
E)   an example of photophosphorylation.

Question 8

What is the final electron acceptor during aerobic respiration?

Accepted Answer

A)   pyruvic acid
B)   oxygen
C)   nitrate
D)   Cytochrome c
E)   FAD

Question 9

When enzyme action stops due to a buildup of end product, this control is called

Accepted Answer

A)   competitive inhibition.
B)   enzyme induction.
C)   enzyme repression.
D)   feedback inhibition.

Question 10

What chemical causes death in many eukaryotes because it blocks Cytochrome c oxidase?

Accepted Answer

A)   copper
B)   iron
C)   cyanide
D)   oxygen
E)   carbon monoxide

Question 11

Only yeast produces alcohol as a fermentation product.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is not involved in the step that occurs between glycolysis and the Krebs cycle?

Accepted Answer

A)   reduction of NAD
B)   decarboxylation of pyruvic acid
C)   Coenzyme A attaches to an acetyl group
D)   dehydrogenation of pyruvic acid
E)   pyruvic acid accepts electrons from NADH

Question 13

Substrate-level phosphorylation occurs in

Accepted Answer

A)   glycolysis and electron transport chain.
B)   photosynthesis and glycolysis.
C)   glycolysis and Krebs cycle.
D)   Krebs cycle and electron transport chain.
E)   All of these choices are correct.

Question 14

During which of the phases of cellular respiration is the majority of ATP formed?

Accepted Answer

A)   electron transport
B)   Krebs cycle
C)   glycolysis
D)   processing of pyruvic acid for the Krebs cycle
E)   All phases produce the same number of ATP molecules.

Question 15

Reduction of nitrogen-oxygen ions and compounds by some bacteria is called

Accepted Answer

A)   aerobic respiration.
B)   denitrification.
C)   nitrification.
D)   fermentation.
E)   deamination.

Question 16

Each of the following are true of enzymes except

Accepted Answer

A)   they can be used over and over.
B)   they may or may not require cofactors.
C)   their active site is specific to the substrate.
D)   they increase the activation energy of a reaction.
E)   All of the choices are true of enzymes.

Question 17

During a fermentation experiment in lab, two different samples of grape juice have been inoculated with yeast. Air has been evacuated from sample I, but not from sample II. In which sample would you predict to the greater alcohol production?

Accepted Answer

A)   sample I
B)   sample II
C)   Similar alcohol production is expected in both samples.
D)   This cannot be predicted based on the information provided.

Question 18

When the product of reaction A becomes the reactant of reaction B, the metabolic pathway is

Accepted Answer

A)   linear.
B)   bidirectional.
C)   convergent.
D)   cyclic.
E)   divergent.

Question 19

In which stage of aerobic respiration is water produced?

Accepted Answer

A)   glycolysis
B)   Krebs cycle
C)   electron transport system

Question 20

Intermediates from the Krebs cycle can be converted to amino acids by the process of

Accepted Answer

A)   amination.
B)   deamination.
C)   phosphorylation.
D)   beta oxidation.
E)   gluconeogenesis.

Exam 8: An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Reduction of nitrogen-oxygen ions and compounds by some bacteria is called

Correct AnswerverifiedShow Answer

ATP is composed of deoxyribose, adenine, and 3 phosphate groups.

Correct AnswerverifiedShow Answer

The majority of reduced NAD is produced in

Correct AnswerverifiedShow Answer

ATP synthase is a complex enzyme needed for oxidative phosphorylation.

Correct AnswerverifiedShow Answer

In which stage of aerobic respiration is water produced?

Correct AnswerverifiedShow Answer

All organisms that are photosynthetic are oxygenic.

Correct AnswerverifiedShow Answer

When enzyme action stops due to a buildup of end product, this control is called

Correct AnswerverifiedShow Answer

The energy released by _________ reactions is used to regenerate _______ which can then provide energy for __________ reactions.

Correct AnswerverifiedShow Answer

Which of these enzymes is NOT an exoenzyme?

Correct AnswerverifiedShow Answer

During which of the phases of cellular respiration is the majority of ATP formed?

Correct AnswerverifiedShow Answer

Which of the following is not involved in the step that occurs between glycolysis and the Krebs cycle?

Correct AnswerverifiedShow Answer

Each of the following are true of enzymes except

Correct AnswerverifiedShow Answer

What chemical causes death in many eukaryotes because it blocks Cytochrome c oxidase?

Correct AnswerverifiedShow Answer

Only yeast produces alcohol as a fermentation product.

Correct AnswerverifiedShow Answer

The step involving ATP, hexokinase and the phosphorylation of glucose to glucose-6-phosphate is

Correct AnswerverifiedShow Answer

Substrate-level phosphorylation occurs in

Correct AnswerverifiedShow Answer

When the product of reaction A becomes the reactant of reaction B, the metabolic pathway is

Correct AnswerverifiedShow Answer

Intermediates from the Krebs cycle can be converted to amino acids by the process of

Correct AnswerverifiedShow Answer

What is the final electron acceptor during aerobic respiration?

Correct AnswerverifiedShow Answer

During a fermentation experiment in lab, two different samples of grape juice have been inoculated with yeast. Air has been evacuated from sample I, but not from sample II. In which sample would you predict to the greater alcohol production?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The energy released by _____ reactions is used to regenerate _ which can then provide energy for ________ reactions.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified