Chapter 25 (Exam 4) Flashcards
1
Q
Explain the glycogen structure.
A
Branched polymer of alpha (1 –> 4) - linked glucose with alpha (1 –>6) linkages every 12 to 14 glucose units
2
Q
How are branches at every 10th residue created in glycogen?
A
Alpha 1,6 glycosidic bonds
3
Q
Where does glycogen storage mainly occur?
A
Liver and muscle
4
Q
What is glycogen degraded to and why?
A
Glucose units for use in energy production
5
Q
What can glycogen be made from?
A
Excess blood glucose or recycling of glucogenic metabolites like lactate or certain amino acids`
6
Q
Where can the enzymes work on a glycogen molecule?
A
The nonreducing ends
7
Q
What does a glucose molecule need to do before it can be synthesized?
A
Needs to be activated, because glucose-1-phosphate is not reactive enough to be attached to the growing glycogen chain.
