Question 1

The redox carriers of the electron transport chain that have a tightly bound metal atom responsible for accepting and donating electrons are

Accepted Answer

A)  NAD
B)  FAD
C)  NADP
D)  The cytochromes
E)  The flavoproteins

Question 2

Enzymes that function inside a cell are

Accepted Answer

A)  Apoenzymes
B)  Exoenzymes
C)  Constitutive enzymes
D)  Regulated enzymes
E)  Endoenzymes

Question 3

Only yeast produces alcohol as a fermentation product.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not true of anaerobic respiration?

Accepted Answer

A)  Is also called fermentation
B)  Involves glycolysis
C)  Generates some ATP
D)  Utilizes an electron transport system
E)  Uses the same final electron acceptors as aerobic respiration

Question 5

Mixed acid fermentation

Accepted Answer

A)  Produces butyric acid
B)  Occurs in all bacteria
C)  Produces several different acids plus CO2 and H2 gases
D)  Is seen in Streptococcus and Lactobacillus
E)  Also produces ethanol

Question 6

In the cell, energy released by electrons is often used to phosphorylate

Accepted Answer

A)  ATP
B)  ADP
C)  Pyruvic acid
D)  Oxygen
E)  NAD

Question 7

Fermentation

Accepted Answer

A)  Requires an organic electron acceptor
B)  Requires oxygen
C)  Only occurs in aerobic organisms
D)  Is equivalent to aerobic respiration in ATP production
E)  None of the choices are correct

Question 8

Oxygen-containing ions are used by some bacteria in a cytochrome-like system.

Accepted Answer

A) True 
 B)False

Question 9

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 10

Glyceraldehyde-3-phosphate is an intermediary of glycolysis that can also be utilized in biosynthetic pathways.

Accepted Answer

A) True 
 B)False

Question 11

In addition to electrons, which of the following is also involved in electron transfer?

Accepted Answer

A)  ADP
B)  Glucose
C)  Carbon
D)  Hydrogen
E)  Carbon dioxide

Question 12

_____ reactions are anabolic reactions involving ligases for synthesis and the release of one water molecule for each bond formed.

Accepted Answer

A)  Reduction
B)  Condensation
C)  Oxidation
D)  Transfer
E)  None of the choices are correct

Question 13

Hydrolysis reactions are catabolic reactions that use water to split the reactant into smaller subunits.

Accepted Answer

A) True 
 B)False

Question 14

Enzymes that catalyze moving a phosphate from one substrate to another are called

Accepted Answer

A)  Phosphotransferases
B)  Oxidoreductases
C)  Decarboxylases
D)  Aminotransferases
E)  Ligases

Question 15

The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called

Accepted Answer

A)  Metabolism
B)  Amphibolism
C)  Anabolism
D)  Catabolism
E)  Biosynthesis

Question 16

Enzymes that are only produced when substrate is present are termed

Accepted Answer

A)  Exoenzymes
B)  Endoenzymes
C)  Constitutive enzymes
D)  Induced enzymes
E)  Conjugated enzymes

Question 17

Each of the following are electron carriers except

Accepted Answer

A)  NAD
B)  FAD
C)  NADP
D)  FADP
E)  Coenzyme A

Question 18

All organisms that are photosynthetic are oxygenic.

Accepted Answer

A) True 
 B)False

Question 19

In which pathway is the most NADH generated?

Accepted Answer

A)  Electron transport system
B)  Krebs cycle
C)  Glycolysis
D)  Alcoholic fermentation
E)  Mixed acid fermentation

Question 20

Enzymes that are secreted by a cell to hydrolyze reactions are

Accepted Answer

A)  Apoenzymes
B)  Exoenzymes
C)  Constitutive enzymes
D)  Regulated enzymes
E)  Endoenzymes

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

Each of the following are electron carriers except

Correct AnswerverifiedShow Answer

In addition to electrons, which of the following is also involved in electron transfer?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is not true of anaerobic respiration?

Correct AnswerverifiedShow Answer

Fermentation

Correct AnswerverifiedShow Answer

In which pathway is the most NADH generated?

Correct AnswerverifiedShow Answer

Mixed acid fermentation

Correct AnswerverifiedShow Answer

Enzymes that are secreted by a cell to hydrolyze reactions are

Correct AnswerverifiedShow Answer

Enzymes that catalyze moving a phosphate from one substrate to another are called

Correct AnswerverifiedShow Answer

All organisms that are photosynthetic are oxygenic.

Correct AnswerverifiedShow Answer

In the cell, energy released by electrons is often used to phosphorylate

Correct AnswerverifiedShow Answer

Enzymes that function inside a cell are

Correct AnswerverifiedShow Answer

The redox carriers of the electron transport chain that have a tightly bound metal atom responsible for accepting and donating electrons are

Correct AnswerverifiedShow Answer

Oxygen-containing ions are used by some bacteria in a cytochrome-like system.

Correct AnswerverifiedShow Answer

Enzymes that are only produced when substrate is present are termed

Correct AnswerverifiedShow Answer

Glyceraldehyde-3-phosphate is an intermediary of glycolysis that can also be utilized in biosynthetic pathways.

Correct AnswerverifiedShow Answer

_____ reactions are anabolic reactions involving ligases for synthesis and the release of one water molecule for each bond formed.

Correct AnswerverifiedShow Answer

The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called

Correct AnswerverifiedShow Answer

Only yeast produces alcohol as a fermentation product.

Correct AnswerverifiedShow Answer

Hydrolysis reactions are catabolic reactions that use water to split the reactant into smaller subunits.

Correct AnswerverifiedShow Answer

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