<prompt> Which enzyme is deficient in cc alcoholics?AconitaseCitrate synthaseIsocitrate dehydrogenaseAlpha ketoglutarate dehydrogenase  <response>: Ans. D. Alpha ketoglutarate dehydrogenaseBecause in alcoholics there is thiamine deficiency, so a thiamine dependent enzyme will be deficient.So answer is Alpha Ketoglutarate Dehydrogenase. 