Question 1

Amination is the addition of a(n)  _____ group to a carbon skeleton.

Accepted Answer

A)  Carboxyl
B)  Amino
C)  Phosphate
D)  Hydroxyl
E)  None of the choices are correctF) A) and D)
G) A) and C)

Question 2

Metabolic pathways that regenerate their starting point are called _____ pathways.

Accepted Answer

A)  Linear
B)  Bi-directional
C)  Convergent
D)  Cyclic
E)  DivergentF) A) and D)
G) B) and E)

Question 3

Enzymes are

Accepted Answer

A)  Broken down in reactions that require energy input
B)  Proteins that function as catalysts
C)  Used up in chemical reactions
D)  Not needed for catabolic reactions
E)  All of the choices are correctF) D) and E)
G) B) and E)

Question 4

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 the choices are correctF) All of the above
G) A) and D)

Question 5

When glucose is broken down by glycolysis during bacterial fermentation, what is the net production of ATP?

Accepted Answer

A)  2 ATP
B)  3 ATP
C)  24 ATP
D)  36 ATP
E)  38 ATPF) A) and C)
G) B) and D)

Question 6

A type of cofactor would be

Accepted Answer

A)  Vitamins
B)  Metallic ions
C)  Active sites
D)  Substrates
E)  RibozymesF) All of the above
G) A) and D)

Question 7

Microbes can utilize only carbohydrates for energy production.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is not a process that regenerates ATP?

Accepted Answer

A)  Oxidative phosphorylation
B)  Reductive phosphorylation
C)  Substrate level phosphorylation
D)  Photophosphorylation
E)  AutophosphorylationF) A) and B)
G) A) and C)

Question 9

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 photophosphorylationF) B) and C)
G) None of the above

Question 10

Reactants are converted to products by

Accepted Answer

A)  Enzymes releasing energy
B)  Breaking and forming bonds
C)  Enzymes binding to reactants
D)  Reactants releasing energy
E)  None of the choices are correctF) B) and C)
G) A) and D)

Question 11

Which of the following are characteristics of the Calvin cycle?

Accepted Answer

A)  A process the requires light
B)  Nitrogen is fixed into an organic form
C)  Produces glucose as an end product
D)  Produces carbon dioxide and water
E)  All of theseF) A) and B)
G) A) and E)

Question 12

Each NADH that enters the electron transport system gives rise to _____ ATP.

Accepted Answer

A)  2
B)  3
C)  24
D)  36
E)  38F) D) and E)
G) C) and D)

Question 13

All of the following pertain to glycolysis except

Accepted Answer

A)  Occurs without oxygen
B)  Ends with formation of pyruvic acid
C)  Occurs during fermentation
D)  Degrades glucose to CO2 and H2O
E)  Involves reduction of NADF) C) and E)
G) A) and E)

Question 14

The majority of reduced NAD is produced in

Accepted Answer

A)  Glycolysis
B)  Krebs cycle
C)  Electron transport chain
D)  Photosynthesis
E)  None of the choices are correctF) A) and E)
G) A) and D)

Question 15

An apoenzyme

Accepted Answer

A)  Is part of a simple enzyme
B)  Is also called a coenzyme
C)  Is the protein part of a holoenzyme
D)  Is often an inorganic metal ion
E)  Is an RNA moleculeF) A) and D)
G) C) and D)

Question 16

Building block molecules for biosynthetic pathways come from the cell's catabolic pathways and from the environment.

Accepted Answer

A) True 
 B)False

Question 17

In bacterial cells, when glucose is completely oxidized by all the pathways of aerobic cellular respiration, what is the maximum number of ATP generated?

Accepted Answer

A)  2 ATP
B)  3 ATP
C)  24 ATP
D)  36 ATP
E)  38 ATPF) A) and D)
G) C) and D)

Question 18

Enzymes that are always present, regardless of the amount of substrate are

Accepted Answer

A)  Apoenzymes
B)  Axoenzymes
C)  Constitutive enzymes
D)  Regulated enzymes
E)  EndoenzymesF) C) and E)
G) D) and E)

Question 19

ATP molecules are catalysts that lower the activation energy needed to initiate a reaction.

Accepted Answer

A) True 
 B)False

Question 20

FAD, NADP, NAD and coenzyme A are all _____ carriers.

Accepted Answer

A)  Hydrogen
B)  Electron
C)  ATP
D)  Both hydrogen and electron
E)  None of the choices are correctF) A) and E)
G) B) and C)

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

The majority of reduced NAD is produced in

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An apoenzyme

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Reactants are converted to products by

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Amination is the addition of a(n) _____ group to a carbon skeleton.

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Microbes can utilize only carbohydrates for energy production.

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Each NADH that enters the electron transport system gives rise to _____ ATP.

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

Correct AnswerverifiedShow Answer

Enzymes that are always present, regardless of the amount of substrate are

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In bacterial cells, when glucose is completely oxidized by all the pathways of aerobic cellular respiration, what is the maximum number of ATP generated?

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Enzymes are

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Which of the following is not a process that regenerates ATP?

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Building block molecules for biosynthetic pathways come from the cell's catabolic pathways and from the environment.

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All of the following pertain to glycolysis except

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Substrate level phosphorylation occurs in

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A type of cofactor would be

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Metabolic pathways that regenerate their starting point are called _____ pathways.

Correct AnswerverifiedShow Answer

ATP molecules are catalysts that lower the activation energy needed to initiate a reaction.

Correct AnswerverifiedShow Answer

Which of the following are characteristics of the Calvin cycle?

Correct AnswerverifiedShow Answer

When glucose is broken down by glycolysis during bacterial fermentation, what is the net production of ATP?

Correct AnswerverifiedShow Answer

FAD, NADP, NAD and coenzyme A are all _____ carriers.

Correct AnswerverifiedShow Answer

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