Podcast
Questions and Answers
Which of the following statements about glycogen and its
catabolism is NOT true?
Which of the following statements about glycogen and its catabolism is NOT true?
- The function of glycogen in liver is to supply glucose to the blood when needed
- The function of glycogen in muscle is to supply energy for muscle contraction
- When glycogenolysis is active in liver, glycolysis is usually inactive
- Muscle, but not liver, has the enzyme glucose-6-phosphatase (correct)
In the liver, glucagon will activate
In the liver, glucagon will activate
- Glycolysis and glycogenolysis
- Glycolysis and glycogen synthesi
- Gluconeogenesis and glycogenolysis (correct)
- Gluconeogenesis and glycogen synthase
- When glycogenolysis occurs, all of the following occur in both liver
and muscle EXCEPT:
- When glycogenolysis occurs, all of the following occur in both liver and muscle EXCEPT:
- Debranching enzyme catalyzes the hydrolysis of alpha-1,6-glycosidic bonds in glycogen
- Glucose-1-P is converted to glucose-6-P by phosphoglucomutase
- The conversion of glycogen phosphorylase a to glycogen phosphorylase b is a major control step
- The glucose produced is exported to the body via the blood (correct)
. Which of the following statement is NOT true?
. Which of the following statement is NOT true?
What is the main function of debranching enzyme?
What is the main function of debranching enzyme?
Which enzyme catalyzes the only reversible
reaction of whole glycogen metabolism?
Which enzyme catalyzes the only reversible reaction of whole glycogen metabolism?
Why can’t muscle release glucose into blood?
Why can’t muscle release glucose into blood?
When glycogenolysis occurs, all of the following occur in both liver and muscle EXCEPT:
When glycogenolysis occurs, all of the following occur in both liver and muscle EXCEPT:
Glycogen phosphorylase is responsible for
the breakdown of glycogen to:
Glycogen phosphorylase is responsible for the breakdown of glycogen to:
. In the glycogen synthase reaction, the precursor to glycogen
is:
. In the glycogen synthase reaction, the precursor to glycogen is:
Why is glycogen branching important?
Why is glycogen branching important?
All of the following statements about glycogen are true
EXCEPT
All of the following statements about glycogen are true EXCEPT
Which enzyme is considered as the principal enzyme for the
regulation of glycogenolysis?
Which enzyme is considered as the principal enzyme for the regulation of glycogenolysis?
Where does glycogenolysis takes place?
Where does glycogenolysis takes place?
The active form of glycogen synthase is:
The active form of glycogen synthase is:
Which of the following statements about the control of
glycogen synthase are correct? A) Glycogen synthase phosphorylation by glycogen synthase kinase
3 (GSK3) is favoured by insulin.
Which of the following statements about the control of glycogen synthase are correct? A) Glycogen synthase phosphorylation by glycogen synthase kinase 3 (GSK3) is favoured by insulin.
. In glycogen the chains are formed by ______ glycosidic
linkages
. In glycogen the chains are formed by ______ glycosidic linkages
- Which of the following statements is NOT true about
- Which of the following statements is NOT true about
- All the following enzymes are involved in the
synthesis of glycogen except:
- All the following enzymes are involved in the synthesis of glycogen except:
Hexokinase in the liver is inhibited by high levels of Glucose-6-
phosphate. Why?
Hexokinase in the liver is inhibited by high levels of Glucose-6- phosphate. Why?
