Why does the citric acid cycle only operate in the presence of oxygen?
A) Oxygen must combine with carbon to form carbon dioxide.
B) Oxygen allows the electron transport chain to receive electrons from NADH and FADH2, and recycle NAD+ and FAD back to the citric acid cycle.
C) Oxygen accepts the ATP from glycolysis so that it can be recycled.
D) Oxygen is added in the form of water to the citric acid cycle.
E) Oxygen allows the electron transport chain to receive electrons from NAD+ and FAD, and recycle NADH and FADH2 back to the citric acid cycle.
B) Oxygen allows the electron transport chain to receive electrons from NADH and FADH2, and recycle NAD+ and FAD back to the citric acid cycle.
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