Oxidative Phosphorylation: Question 14. NADH molecules from glycolysis must travel into the mitochondria to pass their electrons to the electron transport chain. Because this process takes some energy, for every NADH from glycolysis, 2 ATP are formed, instead of 3.
Add up all of the ATPs from each NADH and FADH, produced during the complete breakdown of one glucose molecule. What is the net ATP gain from one glucose? Show your calculations below.

Question 15. Oxidative phosphorylation cannot occur when there is no oxygen to accept electrons from complex 4. In anaerobic conditions (no or low oxygen), electrons quickly build up in the complexes and have no where to go. Interestingly, the citric acid cycle also stops when there is no oxygen. Why? What does the oxidative phosphorylation produce that the citric acid cycle needs to continue working?​