Answer:
Net Input: NAD⁺, coenzyme A, pyruvate
Net Output: NADH, acetyl CoA, CO₂
not input or output: O₂, ADP, glucose and ATP
Explanation:
Acetyl-CoA; A thioester between the acyl group carrier, acetic acid and a thiol, coenzyme A. Acetyl-CoA, as a carrier of acyl groups, is an essential cofactor in the posttranslational acetylation reactions of histone and nonhistone proteins catalyzed by HATs.