Electrons excited in photosystem I help the chloroplast produce

Question

Quizplus · Accepted Answer

Electrons excited in photosystem I are passed to a series of electron carriers and eventually reduce NADP+, producing NADPH (nicotinamide adenine dinucleotide phosphate). NADPH is a key electron carrier molecule that delivers high-energy electrons for use in the Calvin cycle, which synthesizes glucose from carbon dioxide. ATP is produced by photosystem II, not photosystem I, by generating a proton gradient that drives ATP synthase to produce ATP. Water is split in photosystem II to replace the electrons lost by photosystem I, but it does not directly contribute to NADPH production. NADH is a similar electron carrier molecule used in cellular respiration, not photosynthesis.

Electrons Excited in Photosystem I Help the Chloroplast Produce