Biochemistry Which of the following enzyme require NAD as a cofactor? A Citrate Synthase B Isocitrate Dehydrogenase C a-Ketoglutarate dehydrogenase D Succinate Thiokinase 💡 Explanation Which of the following enzyme require NAD as a cofactor? ✓ Correct Answer: C. a-Ketoglutarate dehydrogenase