Question 1

ATP is called the energy currency. The currency of reducing power is:

Accepted Answer

A)  NADPH. 
B)  NADH. 
C)  AMP. 
D)  ADP. 
E)  None of the above. 
A)  NADPH. 
B)  NADH. 
C)  AMP. 
D)  ADP. 
E)  None of the above. A

Question 2

The oxidative phase of the pentose phosphate pathway produces _________________, which is required for lipid biosynthesis.

Accepted Answer

NADPH

Question 3

____________ is a substrate for the pentose phosphate pathway.

Accepted Answer

A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose 
A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose D

Question 4

In the nonoxidative stage of the pentose phosphate pathway, intermediates of _____________ are produced.

Accepted Answer

A)  the citric acid cycle 
B)  glycolysis 
C)  glycogen degradation 
D)  A and C 
E)  B and C 
A)  the citric acid cycle 
B)  glycolysis 
C)  glycogen degradation 
D)  A and C 
E)  B and C

Question 5

Reduced glutathione maintains red blood cell structure by:

Accepted Answer

A)  protecting against falciparum malaria. 
B)  maintaining hemoglobin structure. 
C)  preventing Heinz body formation. 
D)  A and C. 
E)  B and C. 
A)  protecting against falciparum malaria. 
B)  maintaining hemoglobin structure. 
C)  preventing Heinz body formation. 
D)  A and C. 
E)  B and C.

Question 6

Which enzyme controls the pentose phosphate pathway?

Accepted Answer

While the overall rate of the

Question 7

What are the reactions in the oxidative phase of the pentose phosphate pathway?

Accepted Answer

The first reaction is the oxidation of C

Question 8

The two key components required for growth are _________________ and biochemical reducing power.

Accepted Answer

The answer of The two key components required for growth...

Question 9

NADPH is required for which of the following detoxification reactions or enzymes?

Accepted Answer

A)  cytochrome P450 monooxygenase 
B)  reduction of glutathione(ox) 
C)  deamination of serine 
D)  A and B 
E)  All of the above. 
A)  cytochrome P450 monooxygenase 
B)  reduction of glutathione(ox) 
C)  deamination of serine 
D)  A and B 
E)  All of the above.

Question 10

A deficiency of glucose 6-phosphate can cause hemolytic anemia. This is due to a loss in activity in which enzyme in red blood cells?

Accepted Answer

A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose 
A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose

Question 11

Which of the following reactions is not part of the pentose phosphate pathway?

Accepted Answer

A)    
B)   
C)    
D)    
E)  All of the above. 
A)    
B)   
C)    
D)    
E)  All of the above.

Question 12

Ribulose 5-phosphate is the result of the ____________ phase.

Accepted Answer

A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose 
A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose

Question 13

Under what conditions might the pentose phosphate pathway produce large amounts of NADPH without significant net production of ribose 5-phosphate?

Accepted Answer

A)  synthesis of fatty acids in the liver 
B)  when pyruvate is synthesized to generate ATP 
C)  when cells are rapidly dividing 
D)  A and C 
E)  B and C 
A)  synthesis of fatty acids in the liver 
B)  when pyruvate is synthesized to generate ATP 
C)  when cells are rapidly dividing 
D)  A and C 
E)  B and C

Question 14

______________ oxidizes the C3 hydroxyl to a ketone.

Accepted Answer

A)  Lactonase 
B)  Glucose 6-phosphate dehydrogenase 
C)  Transaldolase 
D)  Transketolase 
E)  6-phosphogluconate dehydrogenase 
A)  Lactonase 
B)  Glucose 6-phosphate dehydrogenase 
C)  Transaldolase 
D)  Transketolase 
E)  6-phosphogluconate dehydrogenase

Question 15

How is the pentose phosphate pathway regulated?

Accepted Answer

The level of NADP+ is very important in

Question 16

What is the net reaction of the transketolase and transaldolase steps?

Accepted Answer

A)  3C52C6 + C3 
B)  2C5C6 + C4 
C)  3C5C6 + 3C3 
D)  2C52C4 + C2 
E)  None of the above. 
A)  3C52C6 + C3 
B)  2C5C6 + C4 
C)  3C5C6 + 3C3 
D)  2C52C4 + C2 
E)  None of the above.

Question 17

Excess carbons of the pentose phosphate pathway are shunted to what other metabolic pathway?

Accepted Answer

A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose 
A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose

Question 18

The pentose phosphate pathway:

Accepted Answer

A)  is stimulated by NADH. 
B)  is stimulated by NADPH. 
C)  operates primarily in nondividing cells. 
D)  is contained within the mitochondria of adipose cells. 
E)  None of the above. 
A)  is stimulated by NADH. 
B)  is stimulated by NADPH. 
C)  operates primarily in nondividing cells. 
D)  is contained within the mitochondria of adipose cells. 
E)  None of the above.

Question 19

The second phase of the pentose phosphate pathway is the ____________ phase.

Accepted Answer

A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose 
A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose

Question 20

The prosthetic group ____________ is tightly bound to the enzyme transketolase.

Accepted Answer

A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose 
A) nonoxidative 
B) oxidative 
C) transketolase 
D) glucose 6-phosphate 
E) reducing equivalents
F)thiamine pyrophosphate
G)transaldolase
H)glutathione reductase
I)glycolysis
J)NADH
K)fructose 6-phosphate
L)NADPH/pentose phosphate pathway
M)glucose

Exam 26: The Pentose Phosphate Pathway

ATP is called the energy currency. The currency of reducing power is:

The oxidative phase of the pentose phosphate pathway produces _________________, which is required for lipid biosynthesis.

____________ is a substrate for the pentose phosphate pathway.

In the nonoxidative stage of the pentose phosphate pathway, intermediates of _____________ are produced.

Reduced glutathione maintains red blood cell structure by:

Which enzyme controls the pentose phosphate pathway?

What are the reactions in the oxidative phase of the pentose phosphate pathway?

The two key components required for growth are _________________ and biochemical reducing power.

NADPH is required for which of the following detoxification reactions or enzymes?

A deficiency of glucose 6-phosphate can cause hemolytic anemia. This is due to a loss in activity in which enzyme in red blood cells?

Which of the following reactions is not part of the pentose phosphate pathway?

Ribulose 5-phosphate is the result of the ____________ phase.

Under what conditions might the pentose phosphate pathway produce large amounts of NADPH without significant net production of ribose 5-phosphate?

______________ oxidizes the C3 hydroxyl to a ketone.

How is the pentose phosphate pathway regulated?

What is the net reaction of the transketolase and transaldolase steps?

Excess carbons of the pentose phosphate pathway are shunted to what other metabolic pathway?

The pentose phosphate pathway:

The second phase of the pentose phosphate pathway is the ____________ phase.

The prosthetic group ____________ is tightly bound to the enzyme transketolase.

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant Dna Techniques

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