This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Hexokinase is a \nSelect and explain. \nA. Transferase, B. Reductase, C. Oxidoreductase, D. Oxidase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The International Union of Biochemistry (IUB) name of hexokinase is ATP:D-hexose 6-phosphotransferase E.C. 2.7.1.1. This name identifies hexokinaseas a member of class 2 (transferases), subclass 7 (transfer of a phosphoryl group), sub-subclass 1 (alcohol is the phosphoryl acceptor), and "hexose-6" indicates that the alcohol phosphorylated is on carbon six of a hexose.Ref: Harper&;s Biochemistry; 30th edition; Chapter 7; Enzymes: Mechanism of Action', 'role': 'assistant'}]