Which reaction or reactions that we have met in this chapter require NADH? Which reaction or reactions require NAD+? List the enzymes that catalyze the reactions that require NADH and that require NAD+. a. Glycolysis requires NAD+; enzyme: Hexokinase b. Citric Acid Cycle requires NADH; enzyme: Isocitrate dehydrogenase c. Electron Transport Chain requires NADH; enzyme: NADH dehydrogenase d. Fermentation requires NAD+; enzyme: Alcohol dehydrogenase