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

Carbon fixation
Light reactions of photosynthesis
Dark reactions of photosynthesis
Fermentation

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Photosynthesis and Respiration
Glycolysis takes places in the __________ and produces __________ , which in the presence of oxygen then enters the __________ .

cytosol; pyruvate; mitochondrion to complete fermentation
cytosol; pyruvate; mitochondrion to complete cellular respiration
cytosol; glucose; mitochondrion to complete fermentation
mitochondrion; pyruvate; chloroplast to complete photosynthesis

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