Determine whether cach reaction represents a reduction or oxidation of the reactant or if its oxidation state remains unchanged. If there is a redox change in the reaction, balance it with the necessary amount of NAD NADH, H+ and H, O. The objective is to recognize when a redox coenzyme is necessary in a metabolic reaction. 0= CH CH OH CH- Ethanol Acetaldehyde The conversion of ethanol to acetaldehyde represents Consequently, the complete balanced reaction is (b) OPO OH + HPO OPO OH CH-C-C H OPO 1,3-Bisphosphoglycerate CH-C=O H H Glyceraldehyde 3 phosphate The conversion of 1,3-bisphosphoglycerate (1,3-BPG) to glyceraldehyde 3.phosphate (GAP) represents Consequently, the complete balanced reaction is (c) CH-C-C C4,-6 + co = CH H Acetaldehyde Pyruvate The conversion of pyruvate to acetaldehyde represents Consequently, the complete balanced reaction is Id CHIC- CH, - + CO. Pyruvate Acetate The conversion of pyruvate to acetate represents Consequently, the complete balanced reaction is le) OH OOC-CH-C-COO OOC-CH-C-COO H Osaloacetate Malate The conversion of oxaloacelate to malate represents Consequently, the complete balanced reaction is OH 400C CH. (coo 00C-CH-C-COO H Oxaloacetate Malate The conversion of oxaloacetate to malate represents Consequently, the complete balanced reaction is -- o o CHC + CHCECH + , Acetoacetate Acetone The conversion of acetoacetate to acetone represents Consequently, the complete balanced reaction is