Question 1

Glycolysis can take place in the absence of which of the following small molecules?

Accepted Answer

A)  ATP
B)  Oxygen
C)  NAD+
D)  ADP

Question 2

Which piece of the ATP synthase contains the channel for H+ to flow through?

Accepted Answer

A)  the stalk
B)  the basal unit
C)  the headpiece
D)  the lollipop

Question 3

Consider the contribution of NADH and FADH2. How many of the 38 total ATP molecules produced in cellular respiration come from the citric acid cycle?

Accepted Answer

A)  20
B)  22
C)  28
D)  32

Question 4

Which part of the ATP synthase is responsible for catalyzing ATP formation?

Accepted Answer

A)  the basal unit
B)  the stalk
C)  the headpiece
D)  the lollipop

Question 5

Two mobile electron carriers that are important for the electron transfer system are cytochrome c and ubiquinone.

Accepted Answer

A) True 
 B)False

Question 6

Glycolysis takes place in the mitochondria.

Accepted Answer

A) True 
 B)False

Question 7

Which cellular respiration process is absolutely dependent upon a supply of NADH?

Accepted Answer

A)  glycolysis
B)  the electron transfer system
C)  pyruvate oxidation
D)  the citric acid cycle

Question 8

Which of the following are directly responsible for pumping protons out of the matrix in the mitochondria?

Accepted Answer

A)  cytochrome c, ubiquinone, and protein complex II
B)  cytochrome c, and protein complexes I and III
C)  protein complexes I, III, and IV
D)  ubiquinone, and protein complexes I and IV

Question 9

Suppose it is true that potato plants use uncoupling proteins (UCPs)  in a way that is similar to how mammals use them. What would a researcher expect to observe in these plants?

Accepted Answer

A)  increased amounts of ATP production
B)  decreased mitochondrial catabolism
C)  increased internal tissue temperature
D)  decreased sugar metabolism

Question 10

How many catalytic sites does the ATP synthase have?

Accepted Answer

A)  1
B)  2
C)  3
D)  4

Question 11

Which statement best describes the function of NADH and FADH2?

Accepted Answer

A)  Both produce ATP by substrate-level phosphorylation.
B)  Both transport acetyl-CoA to mitochondria.
C)  Both provide electrons to the electron transfer system.
D)  Both release energy for glycolysis to proceed.

Question 12

Which of the following is the ultimate source of chemical energy for all living organisms?

Accepted Answer

A)  glucose
B)  photosynthesis
C)  GTP
D)  cellular respiration

Question 13

Which of the following best explains the energetic status of cellular respiration?

Accepted Answer

A)  It is an exergonic process , with negative free energy.
B)  It is an endergonic process,with negative free energy.
C)  It is an exergonic process, with positive free energy .
D)  It is an endergonic process, with negative free energy

Question 14

During the process of pyruvate oxidation, pyruvate is broken down and the remaining two carbons are attached to coenzyme A.

Accepted Answer

A) True 
 B)False

Question 15

Which phrase describes the mechanism that facilitates the passage of electrons between protein complexes in the mitochondrial inner membrane?

Accepted Answer

A)  The oxidized electron carrier protein passes on the electron to FADH and becomes reduced.
B)  The reduced electron carrier protein passes on the electron to the next protein and becomes oxidized.
C)  The reduced electron carrier protein passes on the electron to FADH and becomes oxidized.
D)  The oxidized electron carrier protein passes on the electron to the next protein and becomes reduced.

Question 16

Which of the following best explains why food is not energy?

Accepted Answer

A)  Energy is exhaustive, and food is not.
B)  Food is exhaustive, and energy is not.
C)  Food can make us fat, and energy cannot.
D)  Energy can make us fat, and food cannot.

Question 17

Where is ATP synthase located in eukaryotic cells?

Accepted Answer

A)  in the matrix of the mitochondria
B)  in the outer membrane of the cell
C)  in the nuclear envelope
D)  in the inner mitochondrial membrane

Question 18

Which of the following is the best line of evidence for glycolysis being an ancient pathway?

Accepted Answer

A)  Glycolysis occurs in mitochondria.
B)  Glycolysis is universal.
C)  Glycolysis is highly regulated.
D)  Glycolysis is complicated.

Question 19

Which phrase best describes the chemical conditions inside the mitochondrial matrix?

Accepted Answer

A)  low pH and high pyruvate concentration
B)  high pH and high pyruvate concentration
C)  high pH and low pyruvate concentration
D)  low pH and low pyruvate concentration

Question 20

If glycolysis is considered universal, which of the following illustrates that?

Accepted Answer

A)  Glycolysis occurs in Archaea, Bacteria, and Eukarya.
B)  Glycolysis occurs in Archaea and Eukarya.
C)  Glycolysis occurs in Bacteria and Eukarya.
D)  Glycolysis occurs in Archaea and Bacteria.

Exam 6: Cellular Respiration

Which phrase best describes the chemical conditions inside the mitochondrial matrix?

Correct AnswerverifiedShow Answer

If glycolysis is considered universal, which of the following illustrates that?

Correct AnswerverifiedShow Answer

How many catalytic sites does the ATP synthase have?

Correct AnswerverifiedShow Answer

Which cellular respiration process is absolutely dependent upon a supply of NADH?

Correct AnswerverifiedShow Answer

Suppose it is true that potato plants use uncoupling proteins (UCPs) in a way that is similar to how mammals use them. What would a researcher expect to observe in these plants?

Correct AnswerverifiedShow Answer

During the process of pyruvate oxidation, pyruvate is broken down and the remaining two carbons are attached to coenzyme A.

Correct AnswerverifiedShow Answer

Two mobile electron carriers that are important for the electron transfer system are cytochrome c and ubiquinone.

Correct AnswerverifiedShow Answer

Which part of the ATP synthase is responsible for catalyzing ATP formation?

Correct AnswerverifiedShow Answer

Consider the contribution of NADH and FADH2. How many of the 38 total ATP molecules produced in cellular respiration come from the citric acid cycle?

Correct AnswerverifiedShow Answer

Which of the following best explains why food is not energy?

Correct AnswerverifiedShow Answer

Which of the following best explains the energetic status of cellular respiration?

Correct AnswerverifiedShow Answer

Which statement best describes the function of NADH and FADH2?

Correct AnswerverifiedShow Answer

Which of the following is the ultimate source of chemical energy for all living organisms?

Correct AnswerverifiedShow Answer

Which phrase describes the mechanism that facilitates the passage of electrons between protein complexes in the mitochondrial inner membrane?

Correct AnswerverifiedShow Answer

Where is ATP synthase located in eukaryotic cells?

Correct AnswerverifiedShow Answer

Glycolysis can take place in the absence of which of the following small molecules?

Correct AnswerverifiedShow Answer

Which of the following is the best line of evidence for glycolysis being an ancient pathway?

Correct AnswerverifiedShow Answer

Which piece of the ATP synthase contains the channel for H+ to flow through?

Correct AnswerverifiedShow Answer

Which of the following are directly responsible for pumping protons out of the matrix in the mitochondria?

Correct AnswerverifiedShow Answer

Glycolysis takes place in the mitochondria.

Correct AnswerverifiedShow Answer

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Consider the contribution of NADH and FADH₂. How many of the 38 total ATP molecules produced in cellular respiration come from the citric acid cycle?

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Which statement best describes the function of NADH and FADH₂?

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Which piece of the ATP synthase contains the channel for H⁺ to flow through?

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