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Oxygen is very important for aerobic respiration, but oxygen never participates as a reactant in any reaction. What is the role of oxygen in cellular respiration?
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It is terminal electron acceptor for aerobic respiration.
In aerobic respiration oxidation of glucose releases hydrogen which is carried by NAD+ or FAD+, this hydrogen is ultimately accepted by oxygen forming water. Oxygen functions as terminal electron acceptor in aerobic respiration.
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