12 Questions
What is the process by which glucose is synthesized when stored glycogen is depleted?
Gluconeogenesis
Which type of bonds are the branch points in the highly branched structure of glycogen?
α1-6 bonds
Why is there a limit to the amount of glycogen that can be stored in tissues?
It attracts a lot of water due to its high polarity.
Which organ can store up to approximately 100g of glycogen?
Liver
What happens when the period between meals is long enough to deplete stored glycogen?
Gluconeogenesis occurs to synthesize glucose.
What clinical condition can result from abnormal storage of glycogen?
Glycogen storage diseases
Which enzyme catalyzes the irreversible inter-conversion of glucose and galactose?
Branching enzyme
What is the result of the phosphorolysis process on the α-1-4 bonds during glycogen degradation?
Release of glucose 1-phosphate
Which enzyme is required to attack the α1-6 branch points during glycogen degradation?
De-branching enzyme
What is the fate of glucose 6-phosphate in muscle cells?
Enters glycolysis for energy
Which hormone promotes the dephosphorylation of glycogen synthase?
Insulin
What are the major features of glycogen storage diseases?
Poor exercise tolerance
Test your knowledge on the chemical features of glycogen and the process of gluconeogenesis, including the synthesis of glucose when glycogen stores are depleted. Learn about the structure of glycogen and its roles in providing a continuous supply of glucose to tissues.
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