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| light re·ac·tion (plural light re·ac·tions) |
noun |
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| Definition: |
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initial stage in photosynthesis: the first stage of photosynthesis, when light energy is absorbed by chlorophyll and converted into chemical energy that is stored as ATP. It also generates NADPH, a substance that, like ATP, is essential for subsequent stages of photosynthesis.
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| [<light1] |
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