10. What three steps are included in the breakdown of pyruvate? Question 6 options: a. Pyruvate dehydrogenase oxidizes hydroxyethyl group to an acetyl group, producing NADH. It further removes a carboxyl group from pyruvate, producing carbon dioxide. Lastly, dihydrolipoyl transacetylase transfers enzyme-bound acetyl group to CoA, forming an acetyl-CoA molecule. b. Pyruvate dehydrogenase removes a carboxyl group from pyruvate, producing carbon dioxide. Dihydrolipoyl transacetylase oxidizes a hydroxyethyl group to an acetyl group, producing NADH. Lastly, an enzyme-bound acetyl group is transferred to CoA, producing a molecule of acetyl-CoA. c. Pyruvate dehydrogenase transfers enzyme-bound acetyl group to CoA, forming an acetyl CoA molecule. It then oxidizes a hydroxyethyl group to an acetyl group, producing NADH. Dihydrolipoyl transacetylase removes a carboxyl group from pyruvate, producing carbon dioxide. d. Pyruvate dehydrogenase removes carboxyl group from pyruvate, producing carbon dioxide. Dihydrolipoyl dehydrogenase transfers enzyme-bound acetyl groups to CoA, forming an acetyl-CoA molecule. Lastly, a hydroxyethyl group is oxidized to an acetyl group, producing NADH.