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QUESTION 7 In photosynthesis, the reactions that produce O2 take place in A. the light reactions only. B. neither the light r
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Answer. the light reactions only

Solution: The light reactions, which occur within the chloroplasts thylakoids membrane, convert the light energy to the chemical energy of ATP and NADPH. The light reactions use the water and release the product oxygen.

The Calvin cycle, which takes place in the stroma, uses ATP and NADPH to convert carbon dioxide to sugar.

The TCA cycle takes place in the matrix of the mitochondria and produces carbon dioxide, ATP or GTP, NADH, FADH2.

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