Question 1

Enzymes that catalyze the removal of electrons from one substrate and the addition of electrons to another are called ______.

Accepted Answer

A)  transferases
B)  oxidoreductases
C)  lyases
D)  isomerases
E)  ligasesF) C) and E)
G) A) and B)

Question 2

Microbes can utilize only carbohydrates for energy production.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A)  2
B)  3
C)  24
D)  36
E)  38F) B) and D)
G) None of the above

Question 4

A type of cofactor would be ______.

Accepted Answer

A)  vitamins
B)  metallic ions
C)  active sites
D)  substrates
E)  ribozymesF) A) and B)
G) A) and C)

Question 5

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)  is the same as anaerobic respirationF) B) and C)
G) B) and D)

Question 6

In which stage of aerobic respiration is water produced?

Accepted Answer

A)  Glycolysis
B)  The Krebs cycle
C)  The electron transport systemD) A) and B)
E) A) and C)

Question 7

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 enzymesF) D) and E)
G) All of the above

Question 8

The space between the cell membrane and the cell wall is important during aerobic respiration.Why?

Accepted Answer

A)  Hydrogen ions are transported out into the space to set up a hydrogen gradient.
B)  Cytochrome electron carriers are located in the space.
C)  Oxygen combines with electrons in that space to form water.
D)  Pyruvate is transported into the space to be converted into acetyl coenzyme A to enter the Krebs cycle.E) None of the above
F) B) and D)

Question 9

FAD, NADP, NAD, and coenzyme A are all carriers of ________.

Accepted Answer

A)  hydrogens
B)  electrons
C)  ATP
D)  Both hydrogens and electrons are correct.E) A) and D)
F) All of the above

Question 10

Glycolysis and the Krebs cycle yield 10 molecules of NADH per molecule of glucose.How many molecules of ATP will be made from them in the electron transport system?

Accepted Answer

A)  10
B)  38
C)  36
D)  2
E)  30F) D) and E)
G) None of the above

Question 11

ATP synthase is a complex enzyme needed for oxidative phosphorylation.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

A)  Electron transport system
B)  The Krebs cycle
C)  Glycolysis
D)  Processing of pyruvic acid for the Krebs cycle
E)  All phases produce the same number of ATP molecules.F) None of the above
G) A) and B)

Question 13

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

Accepted Answer

A)  ATP
B)  ADP
C)  pyruvic acid
D)  oxygen
E)  NADF) B) and C)
G) A) and C)

Question 14

The cell's metabolic reactions involve the participation of ______ that lower the activation energy needed for the initiation of a reaction.

Accepted Answer

A)  cofactors
B)  vitamins
C)  enzymes
D)  ATP
E)  coenzymesF) B) and D)
G) C) and D)

Question 15

During aerobic cellular respiration, the final electron acceptor is ______.

Accepted Answer

A)  pyruvic acid
B)  oxygen
C)  nitrate
D)  cytochrome C
E)  FADF) A) and B)
G) None of the above

Question 16

During the Calvin cycle, carbon dioxide gas is fixed into a solid, organic form; this is an endergonic process driven by ATP generated from aerobic respiration.

Accepted Answer

A) True 
 B)False

Question 17

The term used to describe all of the chemical reactions within a cell is ______.

Accepted Answer

A)  catabolism
B)  redox reactions
C)  phosphorylation
D)  metabolism
E)  cellular respirationF) B) and E)
G) B) and C)

Question 18

Each of the following are denaturing agents except ______.

Accepted Answer

A)  high temperature
B)  low temperature
C)  high pH
D)  low pHE) A) and C)
F) A) and B)

Question 19

Sulfa drugs like Bactrim, given for bacterial infections, inhibit bacteria by blocking folic acid synthesis.The precursor molecule of folic acid is para-amino benzoic acid (PABA) .Interestingly, PABA has a structure very similar to a sulfa drug.If a sulfa drug is present, the bacterial enzyme will bind the sulfa drug because of structural similarity.This is an example of ______.

Accepted Answer

A)  enzyme induction
B)  enzyme repression
C)  noncompetitive inhibition
D)  competitive inhibition
E)  catabolite repressionF) A) and B)
G) B) and E)

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 8: Microbial Metabolism: The Chemical Crossroads of Life

During the Calvin cycle, carbon dioxide gas is fixed into a solid, organic form; this is an endergonic process driven by ATP generated from aerobic respiration.

Correct Answer
verified

ATP synthase is a complex enzyme needed for oxidative phosphorylation.

Correct Answer
verified

FAD, NADP, NAD, and coenzyme A are all carriers of ________.

Correct Answer
verified

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

Correct Answer
verified

In which stage of aerobic respiration is water produced?

Correct Answer
verified

During aerobic cellular respiration, the final electron acceptor is ______.

Correct Answer
verified

Fermentation ______.

Correct Answer
verified

Glycolysis and the Krebs cycle yield 10 molecules of NADH per molecule of glucose.How many molecules of ATP will be made from them in the electron transport system?

Correct Answer
verified

A type of cofactor would be ______.

Correct Answer
verified

Microbes can utilize only carbohydrates for energy production.

Correct Answer
verified

Each of the following are denaturing agents except ______.

Correct Answer
verified

The space between the cell membrane and the cell wall is important during aerobic respiration.Why?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

The term used to describe all of the chemical reactions within a cell is ______.

Correct Answer
verified

Correct Answer
verified

Enzymes that are only produced when substrate is present are termed ______.

Correct Answer
verified

Enzymes that catalyze the removal of electrons from one substrate and the addition of electrons to another are called ______.

Correct Answer
verified

The cell's metabolic reactions involve the participation of ______ that lower the activation energy needed for the initiation of a reaction.

Correct Answer
verified

Exam 8: Microbial Metabolism: The Chemical Crossroads of Life

During the Calvin cycle, carbon dioxide gas is fixed into a solid, organic form; this is an endergonic process driven by ATP generated from aerobic respiration.

Correct AnswerverifiedShow Answer

ATP synthase is a complex enzyme needed for oxidative phosphorylation.

Correct AnswerverifiedShow Answer

FAD, NADP, NAD, and coenzyme A are all carriers of ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In which stage of aerobic respiration is water produced?

Correct AnswerverifiedShow Answer

During aerobic cellular respiration, the final electron acceptor is ______.

Correct AnswerverifiedShow Answer

Fermentation ______.

Correct AnswerverifiedShow Answer

Glycolysis and the Krebs cycle yield 10 molecules of NADH per molecule of glucose.How many molecules of ATP will be made from them in the electron transport system?

Correct AnswerverifiedShow Answer

A type of cofactor would be ______.

Correct AnswerverifiedShow Answer

Microbes can utilize only carbohydrates for energy production.

Correct AnswerverifiedShow Answer

Each of the following are denaturing agents except ______.

Correct AnswerverifiedShow Answer

The space between the cell membrane and the cell wall is important during aerobic respiration.Why?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The term used to describe all of the chemical reactions within a cell is ______.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Enzymes that are only produced when substrate is present are termed ______.

Correct AnswerverifiedShow Answer

Enzymes that catalyze the removal of electrons from one substrate and the addition of electrons to another are called ______.

Correct AnswerverifiedShow Answer

The cell's metabolic reactions involve the participation of ______ that lower the activation energy needed for the initiation of a reaction.

Correct AnswerverifiedShow Answer

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