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
Hexokinase is a: 
Select and explain. 
A. Transferase, B. Reductase, C. Oxidoreductase, D. Oxidase
A: Transferase
Answer: A: Transferase 
Explanation: 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.