The Calvin cycle requires ATP and NADPH from the light reactions in order to operate.
PHOTOSYNTHESIS:
- Photosynthesis is the process whereby autotrophic organisms synthesize their own food using energy from sunlight.
- Photosynthesis involves a series of biochemical reactions in the chloroplast organelle of plants or algae.
- Photosynthesis, however, occurs in two stages namely:
- Light dependent reaction: Light reaction is the stage of photosynthesis that strictly occurs in the presence of sunlight. The light reaction which occurs in the thylakoid membrane of the chloroplast produces ATP (energy) and NADPH (electron carrier).
- Light independent reaction: This reaction is also called Calvin cycle. It doesn't require light to occur, hence, is also called dark reaction. Calvin cycle uses the ATP and NADPH from light reaction to synthesize glucose molecule.
- Therefore, ATP and NADPH, which are products of light reaction of photosynthesis is required by Calvin cycle to operate.
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