This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
Glycogen phosphorylase is active in 
Select and explain. 
A. Phosphorylated form, B. Dephosphorylated form, C. Both phosphorylated & dephosphorylated form, D. No rate of phosphorylation
A: Phosphorylated form
Answer: A: Phosphorylated form 
Explanation: The phosphorylase -b is the inactive form. It becomes active on phosphorylation. The active enzyme denoted as phosphorylase -aRef: DM Vasudevan, 7th edition, page no: 127