Biochemistry Vitamins and Minerals 91924bd5 Biotin is a coenzyme for: A Pyruvate dehydrogenase B Pyruvate carboxylase C PEP carboxylase D Glutamate pyruvate transaminase High-Yield Explanation Ans. B. Pyruvate carboxylaseBiotin is required as a co-enzyme of carboxylation reactions. Pyruvate carboxylase converts pyruvate to oxaloacetate.