Which is the final electron acceptor in electron transtport chain in chloroplast?

Answer 1

(1) NADP+ is the final electron acceptor of the light-dependent reactions. NADP+ is reduced to NADPH by ferredoxin-NADP+ reductase using electrons derived from the photon-induced splitting of H2O at photosystem II.

(2) In the light-independent or 'dark' reactions the NADPH that is formed is used to further reduce 1,3-bisphosphoglycerate to glyceraldehyde-3-phosphate (G3P). Most of the G3P formed is used to regenerate ribulose 1,5-bisphosphate, while a small amount is used for biosynthesis of energy-rich molecules such as sugars, fats and amino acids. The net effect is that the original electrons (reducing power), derived from the initial splitting of water, are stored in the C-H bonds of these molecules.

Answer 2

The final electron acceptor in the electron transport chain in chloroplasts is NADP+ (nicotinamide adenine dinucleotide phosphate). It accepts electrons and protons to form NADPH, which is a crucial molecule for the production of energy-rich molecules like glucose during photosynthesis.