This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: TCA Cycle, Subject name: Biochemistry
The net ATP yield when one molecule of pyruvate is completely oxidized to CO2 & H2O is: 
Select and explain. 
A. 12.5, B. 15, C. 18, D. 30
A: 12.5
Answer: A: 12.5 
Explanation: The question says complete oxidation of pyruvate and not glucose, so we have to sta with pyruvate without considering the glycolysis pa. Net ATPs produced = 2.5 + 7.5 + 1.5 + 1.0 =12.5 ATPs