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
Biotin is a Co-enzyme for ? 
Select and explain. 
A. Transketolase, B. Dehydrogenase, C. Oxidase, D. Carboxylase
D: Carboxylase
Answer: D: Carboxylase 
Explanation: Ans. is 'd i.e., Carboxylase