<prompt> Which of the following enzyme uses zinc as a cofactor for its biochemical functions?Pyruvate dehydrogenasePyruvate decarboxylasea-ketoglutarate dehydrogenaseAlcohol dehydrogenase  <response>: Zinc containing enzymes are: Alcohol dehydrogenase Carbonic anhydrase Retinine reductase Alkaline phosphatase Glutamate dehydrogenase Lactate dehydrogenase DNA and RNA polymerase d-ALA dehydratase Ref: Medical Biochemistry By Chatterjea, 2011, Page 627. 