Question 1

What reaction is catalyzed by aldolase?

Accepted Answer

. Aldolase catalyzes the rever...

Question 2

In which reaction in glycolysis does a dehydration occur?

Accepted Answer

In glycolysis, a dehydration o...

Question 3

Suggest a reason why glycolysis produces NADH and the pentose phosphate pathway produces NADPH.

Accepted Answer

If either NADPH or NADH were the sole hy...

Question 4

The presence of which of the following molecules indicates that the cell has sufficient energy reserves?

Accepted Answer

A)   ATP
B)   Citrate
C)   ADP
D)   Fructose-1,6-biphosphate
E)   Both A and B are correct.F) A) and D)
G) A) and C)

Question 5

Which of the following enzymes will catalyze the first committed step in glycolysis?

Accepted Answer

A)   Phosphofructoisomerase
B)   Aldolase
C)   Triose phosphate isomerase
D)   Phosphofructokinase 1
E)   PhosphoglucooisomeraseF) A) and E)
G) A) and C)

Question 6

The use of a highly exergonic reaction in the beginning of a catabolic pathway is referred to as __________.

Accepted Answer

A)   bioactivation
B)   turbo design
C)   activation
D)   glycolysis
E)   Both A and C are correct.F) C) and D)
G) C) and E)

Question 7

Which of the following is an oxidizing agent in fermentation?

Accepted Answer

A)   Lactate
B)   Glucose
C)   NADH
D)   Pyruvate
E)   ADPF) A) and B)
G) C) and D)

Question 8

The Pasteur effect is __________.

Accepted Answer

A)   fermentation of glucose
B)   repression of aerobic metabolism by glucose
C)   repression of glycolysis by oxygen
D)   repression of glucose metabolism by ethyl alcohol
E)   fermentation of ethyl alcoholF) A) and D)
G) A) and E)

Question 9

Which of the following molecules can be used to synthesize glucose via gluconeogenesis?

Accepted Answer

A)   Lactate
B)   Pyruvate
C)   Glycerol
D)   Keto acids
E)   All of the above are correct.F) All of the above
G) A) and B)

Question 10

Describe the Cori cycle; what is its physiological function?

Accepted Answer

In the Cori cycle, lactate produced unde...

Question 11

Both glycogenesis and glycogenolysis are controlled primarily by the interplay between the two hormones insulin and __________.

Accepted Answer

A)   glycogen synthetase
B)   glucagon
C)   fructose kinase
D)   glucose hydrolyase
E)   pentose kinaseF) A) and C)
G) A) and B)

Question 12

Compare the entry-level substrates, products and metabolic purposes of glycolysis and gluconeogenesis.

Accepted Answer

In glycolysis, the entry level substrate...

Question 13

Explain and contrast the Pasteur and Crabtree effects.

Accepted Answer

In the Pasteur effect, oxygen inhibits g...

Question 14

Hexokinase D is found in the __________.

Accepted Answer

A)   kidney
B)   liver
C)   heart
D)   muscle
E)   intestineF) A) and E)
G) A) and C)

Question 15

Intermediates in the nonoxidative phase of the pentose phosphate pathway include all of the following except __________.

Accepted Answer

A)   dihydroxyacetone phosphate
B)   sedoheptulose-7-phosphate
C)   fructose-6-phosphate
D)   xylulose-5-phosphate
E)   erythrose-4-phosphateF) None of the above
G) A) and E)

Question 16

Both glycogen and triacylglycerols are energy sources used by the body. Suggest a reason why both are needed.

Accepted Answer

Glycogen and triacylglycerols differ in ...

Question 17

Gluconeogenesis occurs primarily in the __________.

Accepted Answer

A)   brain
B)   muscle
C)   liver
D)   heart
E)   pancreasF) All of the above
G) A) and D)

Question 18

Cori's disease is caused by __________.

Accepted Answer

A)   lack of insulin
B)   lack of phosphorylase b
C)   lack of glucagons
D)   a deficiency of debranching enzyme
E)   deficient chromium receptors on the cell surfaceF) A) and E)
G) A) and D)

Question 19

Explain the role of glycogenin in glycogen synthesis.

Accepted Answer

Glycogenin is a primer protein that is r...

Question 20

Which of the following is the most important glucogenic amino acid?

Accepted Answer

A)   Aspartate
B)   Alanine
C)   Glycine
D)   Glutamate
E)   All are equally important.F) B) and D)
G) A) and C)

Exam 8: Carbohydrate Metabolism

Suggest a reason why glycolysis produces NADH and the pentose phosphate pathway produces NADPH.

Correct AnswerverifiedIf either NADPH or NADH were the sole hy...View AnswerShow Answer

Explain and contrast the Pasteur and Crabtree effects.

Correct AnswerverifiedIn the Pasteur effect, oxygen inhibits g...View AnswerShow Answer

Both glycogenesis and glycogenolysis are controlled primarily by the interplay between the two hormones insulin and __________.

Correct AnswerverifiedShow Answer

The Pasteur effect is __________.

Correct AnswerverifiedShow Answer

The presence of which of the following molecules indicates that the cell has sufficient energy reserves?

Correct AnswerverifiedShow Answer

Which of the following is the most important glucogenic amino acid?

Correct AnswerverifiedShow Answer

Which of the following is an oxidizing agent in fermentation?

Correct AnswerverifiedShow Answer

The use of a highly exergonic reaction in the beginning of a catabolic pathway is referred to as __________.

Correct AnswerverifiedShow Answer

Both glycogen and triacylglycerols are energy sources used by the body. Suggest a reason why both are needed.

Correct AnswerverifiedGlycogen and triacylglycerols differ in ...View AnswerShow Answer

Cori's disease is caused by __________.

Correct AnswerverifiedShow Answer

Compare the entry-level substrates, products and metabolic purposes of glycolysis and gluconeogenesis.

Correct AnswerverifiedIn glycolysis, the entry level substrate...View AnswerShow Answer

Explain the role of glycogenin in glycogen synthesis.

Correct AnswerverifiedGlycogenin is a primer protein that is r...View AnswerShow Answer

In which reaction in glycolysis does a dehydration occur?

Correct AnswerverifiedIn glycolysis, a dehydration o...View AnswerShow Answer

Which of the following enzymes will catalyze the first committed step in glycolysis?

Correct AnswerverifiedShow Answer

Which of the following molecules can be used to synthesize glucose via gluconeogenesis?

Correct AnswerverifiedShow Answer

Intermediates in the nonoxidative phase of the pentose phosphate pathway include all of the following except __________.

Correct AnswerverifiedShow Answer

Gluconeogenesis occurs primarily in the __________.

Correct AnswerverifiedShow Answer

Hexokinase D is found in the __________.

Correct AnswerverifiedShow Answer

What reaction is catalyzed by aldolase?

Correct Answerverified. Aldolase catalyzes the rever...View AnswerShow Answer

Describe the Cori cycle; what is its physiological function?

Correct AnswerverifiedIn the Cori cycle, lactate produced unde...View AnswerShow Answer

Correct Answer
verified
If either NADPH or NADH were the sole hy...
View Answer

Correct Answer
verified
In the Pasteur effect, oxygen inhibits g...
View Answer

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified
Glycogen and triacylglycerols differ in ...
View Answer

Correct Answer
verified

Correct Answer
verified
In glycolysis, the entry level substrate...
View Answer

Correct Answer
verified
Glycogenin is a primer protein that is r...
View Answer

Correct Answer
verified
In glycolysis, a dehydration o...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
. Aldolase catalyzes the rever...
View Answer

Correct Answer
verified
In the Cori cycle, lactate produced unde...
View Answer