Sagot :
Photosystem I directly receives electrons from the photosystem II electron transport chain.
An important membrane protein complex called photosystem I uses light energy to catalyze the movement of electrons from plastocyanin to ferredoxin across the thylakoid membrane. The moderate-energy hydrogen carrier NADPH is ultimately created using photosystem I transfer electrons. Each photosystem is made up of two interconnected parts: the antenna complex, which is composed of a large number of pigment molecules and collects photons, and the reaction center, which is made up of Chlorophyll a molecules embedded in a protein matrix. Plastocyanin (a peripheral membrane protein) transports electrons from photosystem II to photosystem I, where the absorption of additional photons again generates high-energy electrons.
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