The z-scheme is a model that describes the flow of electrons during the light-dependent reactions of photosynthesis, illustrating how energy from sunlight is converted into chemical energy. It depicts two photosystems, Photosystem II (PSII) and Photosystem I (PSI), which work in tandem to facilitate the transfer of electrons through an electron transport chain, ultimately leading to the production of ATP and NADPH. This sequential electron transfer is crucial for converting solar energy into a usable form for the plant.
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