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

Fermentation
Dark reactions of photosynthesis
Carbon fixation
Light reactions of photosynthesis

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

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

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Photosynthesis and Respiration
Which of the following statements about energy metabolism is false?

Plants provide the water and CO2 that animals need to carry out respiration
All animals in some way rely on plants for their energy
The energy that powers living systems ultimately comes from the sun
All eukaryotic organisms carry out respiration in the presence of O2

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