This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Hexokinase is a: \nSelect and explain. \nA. Transferase, B. Reductase, C. Oxidoreductase, D. Oxidase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Transferase - enzymes catalyze transfer of a particular group (containing C. , N- or P-) from one substrate to another. Whereas, hydrolase bring about hydrolysis by addition of water.', 'role': 'assistant'}]