Question 1

An organism may use glycolysis and the pentose phosphate pathway simultaneously.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following can be used as electron acceptors during anaerobic respiration?

Accepted Answer

A)  nitrate
B)  sulfate
C)  carbon dioxide
D)  all of the choicesE) All of the above
F) A) and D)

Question 3

Prokaryotes may use several different terminal oxidases for the electron transport system.

Accepted Answer

A) True 
 B)False

Question 4

The pyruvate dehydrogenase complex oxidizes and cleaves pyruvate to form one CO2 and

Accepted Answer

A)  lactate.
B)  isocitric acid.
C)  acetyl-CoA.
D)  succinyl-CoA.E) C) and D)
F) A) and B)

Question 5

All eukaryotic photosynthesizers are oxygenic.

Accepted Answer

A) True 
 B)False

Question 6

In the TCA cycle,two carbons are removed from citric acid in the form of __________,thereby regenerating oxaloacetate to complete the cycle.

Accepted Answer

A)  acetyl-CoA
B)  ethanol
C)  carbon dioxide
D)  methanolE) A) and D)
F) B) and D)

Question 7

Although most metabolic reactions are freely reversible,a few irreversible catabolic steps are bypassed during biosynthesis with special enzymes that catalyze the reverse reaction in order to allow for independent regulation of catabolic and anabolic pathways.

Accepted Answer

A) True 
 B)False

Question 8

When cells of a facultative anaerobe such as Paracoccus denitrificans are growing under anaerobic conditions and using nitrate as the terminal electron acceptor,______________ nitrate reduction is occurring.

Accepted Answer

The answer of When cells of a facultative anaerobe such...

Question 9

In the process of fermentation an organic substrate,such as glucose,is reduced and an intermediate of the pathway,such as pyruvate,is oxidized.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following may be used as sources of energy by chemolithotrophs?

Accepted Answer

A)  Hydrogen gas.
B)  Reduced nitrogen compounds.
C)  Reduced sulfur compounds.
D)  All of the choices.E) C) and D)
F) A) and B)

Question 11

Oxygen is always required for the regeneration of NAD from NADH.

Accepted Answer

A) True 
 B)False

Question 12

In aerobic conditions,it takes __________ sugar to produce the same amount of ATP when compared to anaerobic conditions.

Accepted Answer

A)  more
B)  less
C)  the same amount ofD) None of the above
E) All of the above

Question 13

Photosynthetic organisms serve as the base for most food chains in the biosphere.

Accepted Answer

A) True 
 B)False

Question 14

The pentose phosphate pathway produces

Accepted Answer

A)  CO2.
B)  NADPH.
C)  glyceraldehyde 3-phosphate.
D)  all of the choices.E) A) and D)
F) B) and D)

Question 15

Mitochondrial electron transport takes place

Accepted Answer

A)  on the outer mitochondrial membrane.
B)  on the inner mitochondrial membrane.
C)  in the fluid matrix of the mitochondria.
D)  on the outer mitochondrial membrane and on the inner mitochondrial membrane.E) A) and B)
F) A) and C)

Question 16

____________ ____________ is a process that can completely catabolize an organic energy source to CO2 using the glycolytic pathways and TCA cycle with O2 as the terminal electron acceptor for an electron transport chain.

Accepted Answer

Question 17

Some aerobic bacteria lack the Entner-Doudoroff and Embden-Meyerhoff pathways and instead use the pentose phosphate pathway for glycolysis.

Accepted Answer

A) True 
 B)False

Question 18

The hypothesis that proton motive force drives ATP synthesis is called the __________ hypothesis.

Accepted Answer

The answer of The hypothesis that proton motive force drives...

Question 19

How many quanta of light are needed to reduce one molecule of carbon dioxide to carbohydrate during photosynthesis?

Accepted Answer

A)  2
B)  3
C)  4
D)  10-12E) B) and D)
F) A) and D)

Question 20

Production of ATP using the energy liberated when electrons from reduced chemical bonds are passed through the electron transport system is generally referred to as __________.

Accepted Answer

A)  chemiosmotic
B)  respiration
C)  substrate-level
D)  conformational changeE) All of the above
F) C) and D)

Exam 11: Catabolism: Energy Release and Conservation

____________ ____________ is a process that can completely catabolize an organic energy source to CO2 using the glycolytic pathways and TCA cycle with O2 as the terminal electron acceptor for an electron transport chain.

Correct AnswerverifiedShow Answer

Prokaryotes may use several different terminal oxidases for the electron transport system.

Correct AnswerverifiedShow Answer

The pyruvate dehydrogenase complex oxidizes and cleaves pyruvate to form one CO2 and

Correct AnswerverifiedShow Answer

In aerobic conditions,it takes __________ sugar to produce the same amount of ATP when compared to anaerobic conditions.

Correct AnswerverifiedShow Answer

In the process of fermentation an organic substrate,such as glucose,is reduced and an intermediate of the pathway,such as pyruvate,is oxidized.

Correct AnswerverifiedShow Answer

All eukaryotic photosynthesizers are oxygenic.

Correct AnswerverifiedShow Answer

Although most metabolic reactions are freely reversible,a few irreversible catabolic steps are bypassed during biosynthesis with special enzymes that catalyze the reverse reaction in order to allow for independent regulation of catabolic and anabolic pathways.

Correct AnswerverifiedShow Answer

Production of ATP using the energy liberated when electrons from reduced chemical bonds are passed through the electron transport system is generally referred to as __________.

Correct AnswerverifiedShow Answer

The hypothesis that proton motive force drives ATP synthesis is called the __________ hypothesis.

Correct AnswerverifiedShow Answer

In the TCA cycle,two carbons are removed from citric acid in the form of __________,thereby regenerating oxaloacetate to complete the cycle.

Correct AnswerverifiedShow Answer

Oxygen is always required for the regeneration of NAD from NADH.

Correct AnswerverifiedShow Answer

An organism may use glycolysis and the pentose phosphate pathway simultaneously.

Correct AnswerverifiedShow Answer

Mitochondrial electron transport takes place

Correct AnswerverifiedShow Answer

Which of the following can be used as electron acceptors during anaerobic respiration?

Correct AnswerverifiedShow Answer

The pentose phosphate pathway produces

Correct AnswerverifiedShow Answer

Photosynthetic organisms serve as the base for most food chains in the biosphere.

Correct AnswerverifiedShow Answer

How many quanta of light are needed to reduce one molecule of carbon dioxide to carbohydrate during photosynthesis?

Correct AnswerverifiedShow Answer

Which of the following may be used as sources of energy by chemolithotrophs?

Correct AnswerverifiedShow Answer

When cells of a facultative anaerobe such as Paracoccus denitrificans are growing under anaerobic conditions and using nitrate as the terminal electron acceptor,______________ nitrate reduction is occurring.

Correct AnswerverifiedShow Answer

Some aerobic bacteria lack the Entner-Doudoroff and Embden-Meyerhoff pathways and instead use the pentose phosphate pathway for glycolysis.

Correct AnswerverifiedShow Answer

is a process that can completely catabolize an organic energy source to CO₂ using the glycolytic pathways and TCA cycle with O₂ as the terminal electron acceptor for an electron transport chain.

Correct Answer
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The pyruvate dehydrogenase complex oxidizes and cleaves pyruvate to form one CO₂ and

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