Question 1

An enzyme family called the __________ catalyzes the phosphorylation of hexoses in the body.

Accepted Answer

A)   hexolysases
B)   phosphorolyases
C)   hexokinases
D)   glucokinases
E)   phosphofructokinasesF) None of the above
G) A) and B)

Question 2

Which of the following activates phosphoprotein phosphatase?

Accepted Answer

A)   Insulin
B)   Epinephrine
C)   Glucagon
D)   ATP
E)   Both A and B are correct.F) A) and B)
G) A) and C)

Question 3

Which of the following is required for the conversion of UDP-glucose to glycogen?

Accepted Answer

A)   Glycogen synthase
B)   Branching enzyme
C)   Glucose phosphorylase
D)   Debranching enzyme
E)   Both A and B are correct.F) A) and E)
G) B) and E)

Question 4

What reaction is catalyzed by phosphoglucomutase?

Accepted Answer

Phosphoglucomutase catalyzes t...

Question 5

Which of the following enzymes catalyzes an irreversible process?

Accepted Answer

A)   Pyruvate kinase
B)   Aldolase
C)   Enolase
D)   Phosphoglycerate mutase
E)   Glyceraldehyde-3-phosphate dehydrogenaseF) A) and D)
G) None of the above

Question 6

Describe the different functions of glycogen in muscle and liver.

Accepted Answer

In muscle, glycogen is synthesized to st...

Question 7

The major carbohydrate fuel for most organisms is __________.

Accepted Answer

A)   glucose
B)   fructose
C)   ribose
D)   sucrose
E)   All of the above are correct.F) B) and C)
G) None of the above

Question 8

Which of the following is a second messenger in glycogenolysis?

Accepted Answer

A)   Glucagon
B)   Insulin
C)   Glucose
D)   ATP
E)   cAMPF) A) and C)
G) B) and C)

Question 9

Phosphorylase kinase __________.

Accepted Answer

A)   converts inactive phosphorylase to active phosphorylase
B)   converts active phosphorylase to inactive phosphorylase
C)   phosphorylates glycogen synthase
D)   converts ADP to ATP
E)   Both B and C are correct.F) B) and C)
G) A) and E)

Question 10

In aerobic metabolism oxygen is the ultimate oxidizing agent (electron acceptor). What is the oxidizing agent in anaerobic fermentation?

Accepted Answer

The common oxidizing...

Question 11

Which of the following enzymes is an oxidoreductase?

Accepted Answer

A)   Aldolase
B)   Triose phosphate isomerase
C)   Glyceraldehyde-3-phosphate dehdyrogenase
D)   Phosphofructokinase
E)   PhosphoglucoisomeraseF) None of the above
G) All of the above

Question 12

Gluconeogenesis is stimulated by high concentrations of which of the following compounds?

Accepted Answer

A)   Lactate
B)   Glycerol
C)   Amino acid
D)   Both A and B are correct
E)   All of the above are correctF) B) and C)
G) B) and D)

Question 13

The binding of insulin to receptors on the surface of muscle cells stimulates which of the following processes?

Accepted Answer

A)   Glycogenolysis
B)   Glycogenesis
C)   Release of ATP
D)   Formation of cyclic AMP
E)   Release of glucagonF) A) and C)
G) D) and E)

Question 14

Why is it important that gluconeogenesis not be the exact reverse of glycolysis?

Accepted Answer

If gluconeogenesis and glycolysis were e...

Question 15

Glycolysis occurs in two stages. Describe what is accomplished in each stage.

Accepted Answer

In the first stage glucose is phosphoryl...

Exam 8: Carbohydrate Metabolism

Phosphorylase kinase __________.

Correct Answer
verified

An enzyme family called the __________ catalyzes the phosphorylation of hexoses in the body.

Correct Answer
verified

The major carbohydrate fuel for most organisms is __________.

Correct Answer
verified

In aerobic metabolism oxygen is the ultimate oxidizing agent (electron acceptor). What is the oxidizing agent in anaerobic fermentation?

Correct Answer
verified
The common oxidizing...
View Answer

What reaction is catalyzed by phosphoglucomutase?

Correct Answer
verified
Phosphoglucomutase catalyzes t...
View Answer

Which of the following enzymes is an oxidoreductase?

Correct Answer
verified

Which of the following is a second messenger in glycogenolysis?

Correct Answer
verified

Which of the following is required for the conversion of UDP-glucose to glycogen?

Correct Answer
verified

Which of the following activates phosphoprotein phosphatase?

Correct Answer
verified

The binding of insulin to receptors on the surface of muscle cells stimulates which of the following processes?

Correct Answer
verified

Describe the different functions of glycogen in muscle and liver.

Correct Answer
verified
In muscle, glycogen is synthesized to st...
View Answer

Gluconeogenesis is stimulated by high concentrations of which of the following compounds?

Correct Answer
verified

Why is it important that gluconeogenesis not be the exact reverse of glycolysis?

Correct Answer
verified
If gluconeogenesis and glycolysis were e...
View Answer

Which of the following enzymes catalyzes an irreversible process?

Correct Answer
verified

Glycolysis occurs in two stages. Describe what is accomplished in each stage.

Correct Answer
verified
In the first stage glucose is phosphoryl...
View Answer

Exam 8: Carbohydrate Metabolism

Phosphorylase kinase __________.

Correct AnswerverifiedShow Answer

An enzyme family called the __________ catalyzes the phosphorylation of hexoses in the body.

Correct AnswerverifiedShow Answer

The major carbohydrate fuel for most organisms is __________.

Correct AnswerverifiedShow Answer

In aerobic metabolism oxygen is the ultimate oxidizing agent (electron acceptor). What is the oxidizing agent in anaerobic fermentation?

Correct AnswerverifiedThe common oxidizing...View AnswerShow Answer

What reaction is catalyzed by phosphoglucomutase?

Correct AnswerverifiedPhosphoglucomutase catalyzes t...View AnswerShow Answer

Which of the following enzymes is an oxidoreductase?

Correct AnswerverifiedShow Answer

Which of the following is a second messenger in glycogenolysis?

Correct AnswerverifiedShow Answer

Which of the following is required for the conversion of UDP-glucose to glycogen?

Correct AnswerverifiedShow Answer

Which of the following activates phosphoprotein phosphatase?

Correct AnswerverifiedShow Answer

The binding of insulin to receptors on the surface of muscle cells stimulates which of the following processes?

Correct AnswerverifiedShow Answer

Describe the different functions of glycogen in muscle and liver.

Correct AnswerverifiedIn muscle, glycogen is synthesized to st...View AnswerShow Answer

Gluconeogenesis is stimulated by high concentrations of which of the following compounds?

Correct AnswerverifiedShow Answer

Why is it important that gluconeogenesis not be the exact reverse of glycolysis?

Correct AnswerverifiedIf gluconeogenesis and glycolysis were e...View AnswerShow Answer

Which of the following enzymes catalyzes an irreversible process?

Correct AnswerverifiedShow Answer

Glycolysis occurs in two stages. Describe what is accomplished in each stage.

Correct AnswerverifiedIn the first stage glucose is phosphoryl...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The common oxidizing...
View Answer

Correct Answer
verified
Phosphoglucomutase catalyzes t...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
In muscle, glycogen is synthesized to st...
View Answer

Correct Answer
verified

Correct Answer
verified
If gluconeogenesis and glycolysis were e...
View Answer

Correct Answer
verified

Correct Answer
verified
In the first stage glucose is phosphoryl...
View Answer