Which of the following statements about glycogen is false?
a. UDP–glucose is produced from glycogen by the action of the enzyme phosphorylase Glycogen is a polymer of glucose in alpha(1->4) linkages with alpha(1->6) linked branches every 8–14 residues.
b. The breakdown of glycogen in skeletal muscle ultimately supplies glucose-6-phosphate, which can enter glycolysis to generate ATP.
c. In glycogen breakdown, glucose residues are sequentially removed from the nonreducing ends.
d. Glycogen is the storage polysaccharide in skeletal muscle and liver cells.
