This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: vitamins, Subject name: Biochemistry
Vit B1 is a cofactor for 
Select and explain. 
A. Transketolase, B. Transaldolase, C. Aldolase A, D. Aldolase B
A: Transketolase
Answer: A: Transketolase 
Explanation: Vit B1 is a cofactor for Transketolase. Transketolase: The second group of enzymes that use TPP as co-enzyme are the transketolases, in the hexose monophosphate shunt pathway of glucose the main role is in carbohydrate metabolism Ref: DM Vasudevan - Textbook of Biochemistry, 8th edition, page no: 467