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  4. 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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Q. 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?

NTA AbhyasNTA Abhyas 2020Respiration in Plants

Solution:

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.