試題詳解

7. Which statement regarding glycogen and its metabolism is   correct  ? 　

1. Highly branched glycogen is less soluble than unbranched glycogen. 　

2. Having more ends effectively increases the rate of glycogen synthesis and breakdown. 　

3. To enter glycolysis, glucose-1-phosphate must undergo isomerization to glucose-6-phosphate by phosphoglucomutase. 　

4. To replenish glucose in the bloodstream, glucose-1-phosphate must be hydrolyzed to free glucose by glucose-1-phosphatase.
(A) 1, 2, and 3 are correct.
(B) 2, 3, and 4 are correct.
(C) 1, 2, and 4 are correct.
(D) All are correct.
(E) None is correct.