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Why Do You Need Oxygen? (What Role Does O₂ Play

Question 44

Multiple Choice

Why do you need oxygen? (What role does O₂ play in aerobic respiration?)


A) It is the final electron acceptor at the end of the electron transport chain.
B) It combines with acetyl-CoA at the start of the citric acid cycle.
C) It is given off as a by-product during the oxidation of pyruvate.
D) It combines with H₂O to help drive the formation of ATP.

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