This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
CoA requires 
Select and explain. 
A. Pantothenic group, B. Biotin, C. Folic acid, D. Cabalamine
A: Pantothenic group
Answer: A: Pantothenic group 
Explanation: The coenzyme A is a complex molecule containing B complex vitamin pantothenic acid and a molecule of beta mercapto ethanolamine; this SH group forms thioester bond in acyl-acyl coA . To emphasize the function of the SH group, the CoA is sometimes written as CoA-SHRef: DM Vasudevan, Page no: 131