This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Biochemistry
[{'content': 'Impoance of pyruvate to lactate formation in anaerobic glycolysis is production of: \nSelect and explain. \nA. FAD, B. NADH to NAD, C. ATP, D. NAD to NADH', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Under anaerobic conditions, pyruvate produced in glycolysis is reduced to lactate by lactate dehydrogenase as NADH is oxidized to NAD+. NAD+ is required for again producing NADH and to carry on glycolysis So, the Purpose of the extra step of anaerobic glycolysis is not Lactate formation, But the purpose is the replenishment of NAD, for use by Glyceraldehyde-3-phosphate Dehydrogenase, for the continuation of glycolysis (see fig).', 'role': 'assistant'}]