Question

Dephosphorylation of glycogen synthase: ____________

a. Increase in the concentration of inorganic phosphate ion
b. Increase in the activity of glycogen phosphorylase
c. Increase of ATP concentration
d. Decreasing glycogen synthesis Increasing glycogen synthesis
e. No effect on glycogen synthesis

Answer 1

Answer:

b. Increase in activity of glycogen phosphorylase.

Explanation:

Glycogen synthase exists in two forms which is phosphorylated form which is covalent modification of serine residues by ATP and dephosphoryated form which is obtained using phosphatase on phosphorylated form. Glycogen phophorylase catalyzes hydrolysis of glycogen which shortens glycogen molecules.