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': 'Which of the following is a primer acting as an acceptor of glucose residues in glycogenesis? \nSelect and explain. \nA. Carbohydrate, B. Lipid, C. Protein, D. Nucleic acid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Primer for Glycogen biosynthesis: Glycogenin protein-contains tyrosine to which Glucose chain attached.', 'role': 'assistant'}]