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
[{'content': 'Positive signals for glycogen breakdown include in all the following except \nSelect and explain. \nA. Cyclic AMP, B. Blood glucose, C. Epinephrine, D. Ca2+', 'role': 'user'}, {'content': 'Answer: B \nExplanation: They conve glycogen into glucose (this process is called glycogenolysis). The glucose is released into the bloodstream, increasing blood sugar. Hypoglycemia.Increased blood glucose level decreases the rate of glycogenolysis and increases glycogenesis.', 'role': 'assistant'}]