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
[{'content': 'Which of the following acts as cofactor after it&;s modification? \nSelect and explain. \nA. Vit-C, B. Pantothenic acid, C. Biotin, D. Zinc', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The functions of pantothenic acid are exeed through coenzyme A or CoA (A for acetylation). Coenzyme A is a central molecule involved in all the metabolisms (carbohydrate, lipid and protein). Coenzyme A may be regarded as a coenzyme of metabolic integration since acetyl CoA is a central molecule for a wide variety of biochemical reactions ref Satyanarayana 4th ed page 149', 'role': 'assistant'}]