Enzyme activated by covalent phosphorylation is: (A) Glycogen phosphorylase, (B) Acetyl CoA carboxylase, (C) HMG CoA reductase, (D) Pyruvate carboxylase
Answer is A. Glycogen phosphorylase removes glucose as glucose-1-phosphate from glycogen(phosphorolysis). It contains pyridoxal phosphate as a prosthetic group.Ref: DM Vasudevan, 7th edition, page no: 124