Question 1

Which of the following citric acid cycle intermediates is a C4 species?

Accepted Answer

A)  fumarate 
B)  citrate 
C)  malate 
D)  more than one correct response 
E)  no correct response 
A)  fumarate 
B)  citrate 
C)  malate 
D)  more than one correct response 
E)  no correct response D

Question 2

Which of the following substances contains two or more high energy phosphate bonds?

Accepted Answer

A)  ATP 
B)  ADP 
C)  AMP 
D)  more than one correct response 
E)  no correct response 
A)  ATP 
B)  ADP 
C)  AMP 
D)  more than one correct response 
E)  no correct response A

Question 3

In a mitochondrion:

Accepted Answer

A)  The inner membrane separates the matrix from the intermembrane space. 
B)  The inner membrane is more permeable than the outer membrane. 
C)  ATP-synthase complexes are found on the folds of the outer membrane. 
D)  More than one correct response. 
E)  No correct response. 
A)  The inner membrane separates the matrix from the intermembrane space. 
B)  The inner membrane is more permeable than the outer membrane. 
C)  ATP-synthase complexes are found on the folds of the outer membrane. 
D)  More than one correct response. 
E)  No correct response. A

Question 4

Use the following to answer the questions below:
For each of the ETC electron carriers, select the number of ETC protein complexes with which it is associated using the response list. Responses may be used more than once or need not be used at all.

-cyt c

Accepted Answer

A) one protein complex 
B) two protein complexes 
C) three protein complexes 
D) four protein complexes 
A) one protein complex 
B) two protein complexes 
C) three protein complexes 
D) four protein complexes

Question 5

Use the following to answer the questions below:
For each of the ETC electron carriers, select the number of ETC protein complexes with which it is associated using the response list. Responses may be used more than once or need not be used at all.

-NADH

Accepted Answer

A) one protein complex 
B) two protein complexes 
C) three protein complexes 
D) four protein complexes 
A) one protein complex 
B) two protein complexes 
C) three protein complexes 
D) four protein complexes

Question 6

Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: (1) Two ribose subunits are present in the coenzyme flavin adenine dinucleotide.
(2) In the common metabolic pathway, 10 molecules of ATP are produced per acetyl CoA catabolized.
(3) The purpose of step 2 in the CAC is to convert a secondary alcohol to a tertiary alcohol.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 7

Use the following to answer the questions below:
For each of the citric acid cycle reactions, select the type of molecules involved (in terms of number of carbon atoms present) using the response list. Responses may be used more than once or need not be used at all.
-Isocitrate F1F1F1S1F1F1F10 F1F1F1S1F1F1F10-ketoglutarate

Accepted Answer

A) C6 F1F1F1S1F1F1F10 C6 
B) C6 F1F1F1S1F1F1F10 C5 
C) C5 F1F1F1S1F1F1F10 C4 
D) C4 F1F1F1S1F1F1F10 C4 
A) C6 F1F1F1S1F1F1F10 C6 
B) C6 F1F1F1S1F1F1F10 C5 
C) C5 F1F1F1S1F1F1F10 C4 
D) C4 F1F1F1S1F1F1F10 C4

Question 8

Which of the following substances does not contain a B vitamin as a structural subunit?

Accepted Answer

A)  flavin adenine dinucleotide 
B)  nicotinamide adenine dinucleotide 
C)  coenzyme A 
D)  more than one correct response 
E)  no correct response 
A)  flavin adenine dinucleotide 
B)  nicotinamide adenine dinucleotide 
C)  coenzyme A 
D)  more than one correct response 
E)  no correct response

Question 9

The number of membrane-bound protein complexes associated with the electron transport chain is

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 10

Oxidative phosphorylation is the process in which ATP is synthesized

Accepted Answer

A)  from ATP synthase 
B)  from ADP 
C)  using energy from the dissipation of a "proton gradient" 
D)  more than one correct response 
E)  no correct response 
A)  from ATP synthase 
B)  from ADP 
C)  using energy from the dissipation of a "proton gradient" 
D)  more than one correct response 
E)  no correct response

Question 11

The missing structural subunit in the following diagram for flavin adenine dinucleotide is

Accepted Answer

A)  phosphate 
B)  ribose 
C)  ribitol 
D)  deoxyribose 
A)  phosphate 
B)  ribose 
C)  ribitol 
D)  deoxyribose

Question 12

Which of the following substances is both a reactant and a product in the operation of the electron transport chain?

Accepted Answer

A)  O2 
B)  FADH2 
C)  CoQ 
D)  more than one correct response 
E)  no correct response 
A)  O2 
B)  FADH2 
C)  CoQ 
D)  more than one correct response 
E)  no correct response

Question 13

Use the following to answer the questions below:
For each of the citric acid cycle reactions, select the type of molecules involved (in terms of number of carbon atoms present) using the response list. Responses may be used more than once or need not be used at all.
-Succinate F1F1F1S1F1F1F10 fumarate

Accepted Answer

A) C6 F1F1F1S1F1F1F10 C6 
B) C6 F1F1F1S1F1F1F10 C5 
C) C5 F1F1F1S1F1F1F10 C4 
D) C4 F1F1F1S1F1F1F10 C4 
A) C6 F1F1F1S1F1F1F10 C6 
B) C6 F1F1F1S1F1F1F10 C5 
C) C5 F1F1F1S1F1F1F10 C4 
D) C4 F1F1F1S1F1F1F10 C4

Question 14

Which of the following sets of electron carriers is associated with the electron transport chain reactions that occur at protein complex I?

Accepted Answer

A)  CoQ, FeSP, cyt b, cyt c 
B)  NADH, FMN, FeSP, CoQ 
C)  cyt c, cyt a, cyt a3 
D)  FADH2, FeSP, CoQ 
A)  CoQ, FeSP, cyt b, cyt c 
B)  NADH, FMN, FeSP, CoQ 
C)  cyt c, cyt a, cyt a3 
D)  FADH2, FeSP, CoQ

Question 15

In which of the following citric acid cycle reactions does the coenzyme FAD participate?

Accepted Answer

A)  citrate F1F1F1S1F1F1F10 isocitrate 
B)  succinate F1F1F1S1F1F1F10 fumarate 
C)  malate F1F1F1S1F1F1F10 oxaloacetate 
D)  more than one correct response 
E)  no correct response 
A)  citrate F1F1F1S1F1F1F10 isocitrate 
B)  succinate F1F1F1S1F1F1F10 fumarate 
C)  malate F1F1F1S1F1F1F10 oxaloacetate 
D)  more than one correct response 
E)  no correct response

Question 16

The correct notation for the reduced form of nicotinamide adenine dinucleotide is

Accepted Answer

A)  NAD+ 
B)  NAD 
C)  NADH 
D)  NADH2 
A)  NAD+ 
B)  NAD 
C)  NADH 
D)  NADH2

Question 17

Use the following to answer the questions below:
For each of the ETC electron carrier characterizations, select the electron carrier's name using the response list. Responses may be used more than once or need not be used at all.

-Interacts with FADH2

Accepted Answer

A) CoQ 
B) cyt a3 
C) FMN 
D) FeSP 
A) CoQ 
B) cyt a3 
C) FMN 
D) FeSP

Question 18

Which of the following is a correct skeletal equation for a hydrolysis reaction involving adenosine phosphates?

Accepted Answer

A)  ATP F1F1F1S1F1F1F10 ADP + 2Pi 
B)  ADP F1F1F1S1F1F1F10 AMP + 2Pi 
C)  ATP F1F1F1S1F1F1F10 AMP + PPi 
D)  ATP F1F1F1S1F1F1F10 ADP + PPi 
A)  ATP F1F1F1S1F1F1F10 ADP + 2Pi 
B)  ADP F1F1F1S1F1F1F10 AMP + 2Pi 
C)  ATP F1F1F1S1F1F1F10 AMP + PPi 
D)  ATP F1F1F1S1F1F1F10 ADP + PPi

Question 19

Use the following to answer the questions below:
For each of the ETC electron carrier characterizations, select the electron carrier's name using the response list. Responses may be used more than once or need not be used at all.

-Interacts with NADH

Accepted Answer

A) CoQ 
B) cyt a3 
C) FMN 
D) FeSP 
A) CoQ 
B) cyt a3 
C) FMN 
D) FeSP

Question 20

Which of the following carry electrons from the citric acid cycle to the electron carriers of the electron transport chain?

Accepted Answer

A)  CoA 
B)  NAD+ 
C)  FADH2 
D)  more than one correct response 
E)  no correct response 
A)  CoA 
B)  NAD+ 
C)  FADH2 
D)  more than one correct response 
E)  no correct response

Exam 23: Biochemical Energy Production

Which of the following citric acid cycle intermediates is a C4 species?

Which of the following substances contains two or more high energy phosphate bonds?

In a mitochondrion:

Use the following to answer the questions below: For each of the ETC electron carriers, select the number of ETC protein complexes with which it is associated using the response list. Responses may be used more than once or need not be used at all. -cyt c

Use the following to answer the questions below: For each of the ETC electron carriers, select the number of ETC protein complexes with which it is associated using the response list. Responses may be used more than once or need not be used at all. -NADH

Which of the following substances does not contain a B vitamin as a structural subunit?

The number of membrane-bound protein complexes associated with the electron transport chain is

Oxidative phosphorylation is the process in which ATP is synthesized

The missing structural subunit in the following diagram for flavin adenine dinucleotide is

Which of the following substances is both a reactant and a product in the operation of the electron transport chain?

Use the following to answer the questions below: For each of the citric acid cycle reactions, select the type of molecules involved (in terms of number of carbon atoms present) using the response list. Responses may be used more than once or need not be used at all. -Succinate  fumarate

Which of the following sets of electron carriers is associated with the electron transport chain reactions that occur at protein complex I?

In which of the following citric acid cycle reactions does the coenzyme FAD participate?

The correct notation for the reduced form of nicotinamide adenine dinucleotide is

Use the following to answer the questions below: For each of the ETC electron carrier characterizations, select the electron carrier's name using the response list. Responses may be used more than once or need not be used at all. -Interacts with FADH2

Which of the following is a correct skeletal equation for a hydrolysis reaction involving adenosine phosphates?

Use the following to answer the questions below: For each of the ETC electron carrier characterizations, select the electron carrier's name using the response list. Responses may be used more than once or need not be used at all. -Interacts with NADH

Which of the following carry electrons from the citric acid cycle to the electron carriers of the electron transport chain?

Basic Concepts About Matter

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Chemical Bonding: the Ionic Bond Model

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Filters

Which of the following citric acid cycle intermediates is a C₄ species?

Use the following to answer the questions below: For each of the ETC electron carrier characterizations, select the electron carrier's name using the response list. Responses may be used more than once or need not be used at all. -Interacts with FADH₂