Question 1

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is the liver enzyme that cleaves the phosphate from glucose 6-phosphate.

Accepted Answer

A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon 
A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon

Question 2

Why does the liver possess a specific enzyme that can cleave glucose 6-phosphate to form glucose and orthophosphate?

Accepted Answer

The liver controls the blood g

Question 3

Phosphoglucomutase requires the intermediate ______________ for the interconversion of glucose 1-phosphate and glucose 6-phosphate.

Accepted Answer

glucose-1,

Question 4

What are some of the advantages of having glycogen as a readily available glucose source?

Accepted Answer

Glycogen is easily broken down, is a rea

Question 5

Choose the correct answer from the list below. Not all of the answers will be used.
-The ____________ enzyme serves as the glucose "sensor" enzyme in liver cells.

Accepted Answer

A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon 
A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon

Question 6

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is the end of glycogen where interconversion between the open and closed conformation of the anomeric carbon is possible

Accepted Answer

A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon 
A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon

Question 7

Choose the correct answer from the list below. Not all of the answers will be used.
-The protein ____________ is the δ subunit of phosphorylase kinase.

Accepted Answer

A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon 
A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon

Question 8

What is required to remove branches in glycogen?

Accepted Answer

A)  a debranching enzyme 
B)  a transferase enzyme 
C)  a glycosidase enzyme. 
D)  A and C 
E)  All of the above. 
A)  a debranching enzyme 
B)  a transferase enzyme 
C)  a glycosidase enzyme. 
D)  A and C 
E)  All of the above.

Question 9

______________ markedly stimulates glycogen breakdown in muscle by initiating a cAMP signal-transduction cascade.

Accepted Answer

epinephrin

Question 10

What is the function of liver glycogen degradation?

Accepted Answer

A)  to export glucose to other tissues when glucose levels are low 
B)  to maintain glucose levels after a large meal 
C)  to provide for the large energy needs of the liver 
D)  All of the above. 
E)  None of the above. 
A)  to export glucose to other tissues when glucose levels are low 
B)  to maintain glucose levels after a large meal 
C)  to provide for the large energy needs of the liver 
D)  All of the above. 
E)  None of the above.

Question 11

The major site(s) of glycogen storage is (are):

Accepted Answer

A)  adipose tissue. 
B)  liver. 
C)  skeletal muscle. 
D)  B and C. 
E)  A, B, and C. 
A)  adipose tissue. 
B)  liver. 
C)  skeletal muscle. 
D)  B and C. 
E)  A, B, and C.

Question 12

Which GTP binding protein is activated by epinephrine binding to the adrenergic 7TM receptor?

Accepted Answer

The answer of Which GTP binding protein is activated by...

Question 13

Why must glycogen control be manifested differently in muscle and liver?

Accepted Answer

Because the muscle maintains g

Question 14

Phosphorylase kinase becomes fully active by being phosphorylated and binding ___________.

Accepted Answer

The answer of Phosphorylase kinase becomes fully active by being...

Question 15

Choose the correct answer from the list below. Not all of the answers will be used.
-The ____________ enzyme catalyzes the phosphorylation of glycogen phosphorylase.

Accepted Answer

A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon 
A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon

Question 16

The key enzyme in glycogen degradation is:

Accepted Answer

A)  glycogen phosphatase. 
B)  glycogen phosphorylase. 
C)  glucose 1-phosphate synthase. 
D)  All of the above. 
E)  None of the above. 
A)  glycogen phosphatase. 
B)  glycogen phosphorylase. 
C)  glucose 1-phosphate synthase. 
D)  All of the above. 
E)  None of the above.

Question 17

Draw a structure showing the most common linkage between glucose units found in glycogen.

Accepted Answer

The structure should

Question 18

Choose the correct answer from the list below. Not all of the answers will be used.
-The hormone ____________ signifies the starved state.

Accepted Answer

A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon 
A) reducing 
B) α-1,6-glycosidic 
C) phosphorylase kinase 
D) α-1,4-glycoside 
E) nonreducing
F)phosphorylase a
G)glucose 6-phosphatase
H)UTP-glucose
I)calmodulin
J)phosphorolysis
K)epinephrine
L)glucagon

Question 19

Muscle phosphorylase is mostly inactive when:

Accepted Answer

A)  the enzyme is in the b conformation 
B)  in the R state. 
C)  bound to AMP. 
D)  All of the above. 
E)  None of the above. 
A)  the enzyme is in the b conformation 
B)  in the R state. 
C)  bound to AMP. 
D)  All of the above. 
E)  None of the above.

Question 20

Calcium binds and leads to the activation of which enzyme in glycogen degradation?

Accepted Answer

A)  phosphorylase 
B)  phosphoglucomutase 
C)  protein kinase C 
D)  phosphorylase kinase 
E)  glycogen phosphorylase 
A)  phosphorylase 
B)  phosphoglucomutase 
C)  protein kinase C 
D)  phosphorylase kinase 
E)  glycogen phosphorylase

Exam 24: Glycogen Degradation

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is the liver enzyme that cleaves the phosphate from glucose 6-phosphate.

Why does the liver possess a specific enzyme that can cleave glucose 6-phosphate to form glucose and orthophosphate?

Phosphoglucomutase requires the intermediate ______________ for the interconversion of glucose 1-phosphate and glucose 6-phosphate.

What are some of the advantages of having glycogen as a readily available glucose source?

Choose the correct answer from the list below. Not all of the answers will be used. -The ____________ enzyme serves as the glucose "sensor" enzyme in liver cells.

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is the end of glycogen where interconversion between the open and closed conformation of the anomeric carbon is possible

Choose the correct answer from the list below. Not all of the answers will be used. -The protein ____________ is the δ subunit of phosphorylase kinase.

What is required to remove branches in glycogen?

______________ markedly stimulates glycogen breakdown in muscle by initiating a cAMP signal-transduction cascade.

What is the function of liver glycogen degradation?

The major site(s) of glycogen storage is (are):

Which GTP binding protein is activated by epinephrine binding to the adrenergic 7TM receptor?

Why must glycogen control be manifested differently in muscle and liver?

Phosphorylase kinase becomes fully active by being phosphorylated and binding ___________.

Choose the correct answer from the list below. Not all of the answers will be used. -The ____________ enzyme catalyzes the phosphorylation of glycogen phosphorylase.

The key enzyme in glycogen degradation is:

Draw a structure showing the most common linkage between glucose units found in glycogen.

Choose the correct answer from the list below. Not all of the answers will be used. -The hormone ____________ signifies the starved state.

Muscle phosphorylase is mostly inactive when:

Calcium binds and leads to the activation of which enzyme in glycogen degradation?

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 Synthesis

The Pentose Phosphate Pathway

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

Filters