This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glycogen, Subject name: Biochemistry
[{'content': 'Enzyme involved in both glycogenesis and glycogenolysis is: \nSelect and explain. \nA. Glycogen synthase, B. Phosphoglucomutase(PGM), C. Phosphorylase, D. Phoshoglycero mutase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Enzyme common between glycogenesis and glycogenolysis is phosphoglucomutase for interconversion between glucose-1-P and glucose-6-P. (see treasure) Phosphoglyceromutase- for isomerization of 3-phosphoglycerate to 2-phosphoglycerate in glycolysis Enzyme common between glycogenesis and glycolysis Hexokinase/ Glucokinase glycogenesis and glycogenolysis Phosphoglucomutase. gluconeogenesis and glycogenolysis Glucose-6- phosphatase', 'role': 'assistant'}]