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
Inactive precursors of enzymes are known as 
Select and explain. 
A. Apoenzymes, B. Coenzymes, C. Proenzymes, D. Holoenzymes
C: Proenzymes
Answer: C: Proenzymes 
Explanation: None