Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation?

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Question:
Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation?

1.Fermentation

2. Light reactions of photosynthesis

3. Dark reactions of photosynthesis

4.Carbon fixation

Posted Date:-2021-03-07 10:59:30

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  15. A glucogenic amino acid is one which is degraded to
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