Question 1

Most electron carriers are ______.

Accepted Answer

A)   coenzymes
B)   enzymes
C)   hydrogen
D)   inorganic phosphateE) A) and B)
F) None of the above A

Question 2

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

Accepted Answer

A)   apoenzymes
B)   exoenzymes
C)   constitutive enzymes
D)   regulated enzymes
E)   endoenzymesF) A) and B)
G) B) and E)

Question 3

Exergonic reactions

Accepted Answer

A)   include synthesis of large carbohydrates.
B)   only occur in heterotrophs.
C)   occur during aerobic cellular respiration.
D)   do not occur in anaerobic cellular respiration.
E)   occur when ADP binds to inorganic phosphate to form ATP.F) B) and E)
G) A) and B)

Question 4

The relationship between the light-dependent and light-independent reactions in photosynthesis is that

Accepted Answer

A)   the ATP made during the light-dependent reactions is used for the growth and development of the cell and the ATP from the oxidation of glucose drives the light reactions.
B)   the light-independent reactions are driven by the ATP and NADPH generated from the light reactions.
C)   the energy stored in the glucose made during the Calvin cycle is used to drive the light reactions.
D)   the light-dependent and light-independent reactions both take place within the membranes of bacterial cells or thylakoid membranes of chloroplasts.E) None of the above
F) A) and B)

Question 5

Oxygen-containing ions are used by some bacteria in their electron transport system.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is not true of the light-dependent reactions of photosynthesis?

Accepted Answer

A)   They occur in thylakoid membranes.
B)   They generate NADPH.
C)   They generate glucose from CO2 and H2O.
D)   The photons cause magnesium to release electrons.
E)   ATP is generated by a chemiosmotic mechanism.F) A) and E)
G) All of the above

Question 7

The light-harvesting units in the thylakoid membranes are the ______.

Accepted Answer

A)   ATP synthases
B)   electrons
C)   ATP molecules
D)   photosystems
E)   granaF) B) and C)
G) A) and E)

Question 8

A holoenzyme is a combination of a protein and one or more substances called ______.

Accepted Answer

A)   substrates
B)   apoenzymes
C)   catalysts
D)   cofactors
E)   ribozymesF) C) and D)
G) B) and E)

Question 9

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 E)
G) D) and E)

Question 10

What process is described here? A concentration gradient of H+ ions is created in the periplasmic space by actively transporting the ions across the membrane using the energy liberated when carrier molecules are oxidized.When the H+ ions pass through ATPase,enough energy is generated to add phosphate groups onto ADP molecules.

Accepted Answer

A)   Fermentation
B)   The Calvin cycle
C)   Substrate-level phosphorylation
D)   Oxidative phosphorylation
E)   DeaminationF) A) and E)
G) None of the above D

Question 11

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) B) and C)
G) C) and E)

Question 12

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)   biosynthesisF) C) and E)
G) A) and E)

Question 13

Substrate-level phosphorylation occurs in

Accepted Answer

A)   glycolysis and the electron transport chain.
B)   photosynthesis and glycolysis.
C)   glycolysis and the Krebs cycle.
D)   the Krebs cycle and the electron transport system.
E)   the electron transport system only.F) A) and D)
G) All of the above

Question 14

In bacterial cells,the electron transport system is located in the ______.

Accepted Answer

A)   cell membrane
B)   mitochondria
C)   chloroplasts
D)   ribosomes
E)   cytoplasmF) A) and B)
G) C) and D)

Question 15

Photosynthesis occurs in chloroplasts of prokaryotes.

Accepted Answer

A) True 
 B)False

Question 16

How many carbon dioxide molecules are produced by the complete aerobic breakdown of one glucose molecule?

Accepted Answer

A)   2
B)   3
C)   4
D)   5
E)   6F) B) and E)
G) A) and B)

Question 17

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) A) and B)
G) D) and E)

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

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) C) and D)

Question 20

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

Accepted Answer

A)   aerobic respiration
B)   denitrification
C)   nitrification
D)   fermentation
E)   deaminationF) D) and E)
G) B) and E) B

Exam 8: Microbial Metabolism: The Chemical Crossroads of Life

Most electron carriers are ______.

Correct Answer
verified
A

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

Correct Answer
verified

Exergonic reactions

Correct Answer
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The relationship between the light-dependent and light-independent reactions in photosynthesis is that

Correct Answer
verified

Oxygen-containing ions are used by some bacteria in their electron transport system.

Correct Answer
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Which of the following is not true of the light-dependent reactions of photosynthesis?

Correct Answer
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The light-harvesting units in the thylakoid membranes are the ______.

Correct Answer
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A holoenzyme is a combination of a protein and one or more substances called ______.

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

Correct Answer
verified

Correct Answer
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D

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

Correct Answer
verified

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

Correct Answer
verified

Substrate-level phosphorylation occurs in

Correct Answer
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In bacterial cells,the electron transport system is located in the ______.

Correct Answer
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Photosynthesis occurs in chloroplasts of prokaryotes.

Correct Answer
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How many carbon dioxide molecules are produced by the complete aerobic breakdown of one glucose molecule?

Correct Answer
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Fermentation ______.

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

Correct Answer
verified

Each of the following are denaturing agents except ______.

Correct Answer
verified

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

Correct Answer
verified
B

Exam 8: Microbial Metabolism: The Chemical Crossroads of Life

Most electron carriers are ______.

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

Exergonic reactions

Correct AnswerverifiedShow Answer

The relationship between the light-dependent and light-independent reactions in photosynthesis is that

Correct AnswerverifiedShow Answer

Oxygen-containing ions are used by some bacteria in their electron transport system.

Correct AnswerverifiedShow Answer

Which of the following is not true of the light-dependent reactions of photosynthesis?

Correct AnswerverifiedShow Answer

The light-harvesting units in the thylakoid membranes are the ______.

Correct AnswerverifiedShow Answer

A holoenzyme is a combination of a protein and one or more substances called ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Substrate-level phosphorylation occurs in

Correct AnswerverifiedShow Answer

In bacterial cells,the electron transport system is located in the ______.

Correct AnswerverifiedShow Answer

Photosynthesis occurs in chloroplasts of prokaryotes.

Correct AnswerverifiedShow Answer

How many carbon dioxide molecules are produced by the complete aerobic breakdown of one glucose molecule?

Correct AnswerverifiedShow Answer

Fermentation ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Each of the following are denaturing agents except ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

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A

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D

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B