Asked by Ai

Which process in photosynthesis uses energy from the sun?

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Answered by GPT-5 mini AI
The light-dependent reactions (also called the light reactions or photochemical phase). Chlorophyll and other pigments absorb sunlight, which excites electrons in photosystems II and I, driving an electron transport chain that generates ATP (by photophosphorylation) and reduces NADP+ to NADPH. Those products then power the Calvin cycle (the light-independent reactions) that build sugars.