This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
The purpose of Lactate dehydrogenase in anaerobic glycolysis is 
Select and explain. 
A. Production of Lactate, B. Production of ATP, C. Replenishment of NAD, D. Replenishment of NADH
C: Replenishment of NAD
Answer: C: Replenishment of NAD 
Explanation: Replenishment of NAD is important because, it helps to sustain glycolysis in anaerobic conditions.