What absorbs sunlight in plant leaves?
Photosystem II takes 680 nm red light and as it absorbs it, particles of different colors resonate and energize chlorophyll a which then retron by being excited. After, the electron gets joined by another one and H+ ions are following along while they get transported through electron trsnaport proteins such as Pq, Pc and then go through cytochrome b6f. Then, the sunlight hits Photosystem I at 700 nm red light and the electrons get transferred to the Fq, then it goes through NADP synthase, creating NADPH+ H+. After that, the concentration of H+ ions are excessive in the thylakoid membrane, so ATP synthase shoots out some H+ into the stroma.