Question 1

In the electron transport system, hydrogen ultimately combines with

Accepted Answer

A)   carbohydrates.
B)   phosphate.
C)   oxygen.
D)   water.E) A) and B)
F) A) and C)

Question 2

During glycolysis, a six-carbon sugar is converted to

Accepted Answer

A)   three two-carbon sugars.
B)   glucose.
C)   two pyruvic acid molecules.
D)   a disaccharide.E) B) and D)
F) B) and C)

Question 3

____ is NOT a product of the Kreb cycle.

Accepted Answer

A)   Pyruvic acid
B)   ATP
C)   NADH2 and FADH2
D)   CO2E) A) and C)
F) A) and D)

Question 4

In the electron transport system, the final hydrogen (electron)  acceptor is

Accepted Answer

A)   oxygen.
B)   ATP.
C)   acetyl.
D)   NAD.E) A) and D)
F) None of the above A

Question 5

Organisms able to make food molecules from inorganic materials and sun energy are

Accepted Answer

A)   autotrophs.
B)   aerobic.
C)   anaerobic.
D)   heterotrophs.E) A) and B)
F) A) and C)

Question 6

Which of the following would NOT be synthesized during anaerobic cellular respiration from pyruvic acid?

Accepted Answer

A)   ethyl alcohol and CO2
B)   lactic acid
C)   acetyl
D)   acetic acidE) All of the above
F) C) and D)

Question 7

The digestion of a protein results in

Accepted Answer

A)   sugars.
B)   enzymes.
C)   amino acids.
D)   the formation of peptide bonds.E) C) and D)
F) A) and C)

Question 8

Acetyl can be produced directly from

Accepted Answer

A)   CoA.
B)   glucose.
C)   proteins.
D)   pyruvic acid.E) A) and D)
F) A) and C)

Question 9

The Krebs cycle requires

Accepted Answer

A)   a four-carbon acid.
B)   coenzyme A (Co
A)  .
C)   an acetyl group (2
C)  .
D)   All of these answers are true.E) C) and D)
F) B) and D)

Question 10

Aerobic cellular respiration differs from anaerobic respiration in that

Accepted Answer

A)   aerobic cellular respiration only takes place in plants.
B)   anaerobic cellular respiration requires the presence of mitochondria.
C)   aerobic cellular respiration produces more ATP.
D)   anaerobic cellular respiration only uses the electron transport system.E) C) and D)
F) None of the above

Question 11

Chemosynthesis is

Accepted Answer

A)   a form of photosynthesis.
B)   a way some autotrophs make organic matter.
C)   a product of the Krebs cycle.
D)   present only in animals.E) B) and C)
F) A) and C) B

Question 12

Aerobic cellular respiration differs from anaerobic cellular respiration in that

Accepted Answer

A)   anaerobic cellular respiration only takes place in plants.
B)   aerobic cellular respiration takes place in mitochondria.
C)   anaerobic cellular respiration produces more ATP.
D)   aerobic cellular respiration only uses glycolysis.E) A) and D)
F) B) and D)

Question 13

The relationship between lactic acid and pyruvic acid is that

Accepted Answer

A)   lactic acid is formed only in milk.
B)   lactic acid is formed from pyruvic acid in fermentation.
C)   one has phosphate and the other doesn't.
D)   one is twice as big (6 carbons)  as the other (3 carbons) .E) A) and C)
F) A) and D)

Question 14

Glucose + NAD+ + ADP + P  →\rightarrow→  NADH + Pyruvic Acid + ATP. This formula represents

Accepted Answer

A)   the Krebs cycle.
B)   photosynthesis.
C)   glycolysis.
D)   the light-dependent reactions. E) B) and C)
F) A) and C)

Question 15

Which contains the greatest amount of potential energy?

Accepted Answer

A)   C6H12O6 (glucose) 
B)   C48H82O41 (complex carbohydrate) 
C)   CH3CH2COOH (pyruvic acid) 
D)   CO2 (carbon dioxide) E) None of the above
F) A) and B) B

Question 16

What is happening here? "W" represents any molecule and e- represents an electron.
W  →\rightarrow→  W+ + e-

Accepted Answer

A)   oxidation of W
B)   reduction of W
C)   hydrolysis of W
D)   None of these choices is correct. E) A) and D)
F) B) and C)

Question 17

A form of metabolism used by prokaryotic organisms is

Accepted Answer

A)   chemosynthesis.
B)   photosynthesis.
C)   anaerobic respiration.
D)   All of these answers are correct.E) B) and C)
F) A) and C)

Question 18

The Krebs cycle produces

Accepted Answer

A)   carbon dioxide.
B)   phosphate.
C)   acetyl.
D)   CoA.E) C) and D)
F) B) and C)

Question 19

Aerobic cellular respiration requires the use of

Accepted Answer

A)   N2.
B)   O2.
C)   H2.
D)   H2O.E) A) and B)
F) B) and C)

Question 20

Conversion of a six-carbon carbohydrate to two pyruvic acid molecules with accompanying reactions that release ATP and hydrogen atoms is called

Accepted Answer

A)   glycolysis.
B)   Krebs cycle.
C)   electron transport system.
D)   carbon fixation.E) A) and D)
F) A) and C)

Exam 6: Biochemical Pathways: Cellular Respiration

In the electron transport system, hydrogen ultimately combines with

Correct AnswerverifiedShow Answer

During glycolysis, a six-carbon sugar is converted to

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____ is NOT a product of the Kreb cycle.

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In the electron transport system, the final hydrogen (electron) acceptor is

Correct AnswerverifiedA

Organisms able to make food molecules from inorganic materials and sun energy are

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Which of the following would NOT be synthesized during anaerobic cellular respiration from pyruvic acid?

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The digestion of a protein results in

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Acetyl can be produced directly from

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The Krebs cycle requires

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Aerobic cellular respiration differs from anaerobic respiration in that

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Chemosynthesis is

Correct AnswerverifiedB

Aerobic cellular respiration differs from anaerobic cellular respiration in that

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The relationship between lactic acid and pyruvic acid is that

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Glucose + NAD+ + ADP + P →\rightarrow→ NADH + Pyruvic Acid + ATP. This formula represents

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Which contains the greatest amount of potential energy?

Correct AnswerverifiedB

What is happening here? "W" represents any molecule and e- represents an electron. W →\rightarrow→ W+ + e-

Correct AnswerverifiedShow Answer

A form of metabolism used by prokaryotic organisms is

Correct AnswerverifiedShow Answer

The Krebs cycle produces

Correct AnswerverifiedShow Answer

Aerobic cellular respiration requires the use of

Correct AnswerverifiedShow Answer

Conversion of a six-carbon carbohydrate to two pyruvic acid molecules with accompanying reactions that release ATP and hydrogen atoms is called

Correct AnswerverifiedShow Answer

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A

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B

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Glucose + NAD⁺ + ADP + P $\rightarrow$ NADH + Pyruvic Acid + ATP. This formula represents

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B

What is happening here? "W" represents any molecule and e^- represents an electron. W $\rightarrow$ W⁺ + e^-

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