Question

to which substance does ferredoxin transfer an electron?
photosystem i
photosystem ii
nadp+
nadph

Explanation:

Ferredoxin is an iron - sulfur protein that functions as an electron carrier in photosynthesis. In the non - cyclic electron flow (Z - scheme) of photosynthesis, after photosystem I (PSI) absorbs light and gets excited, it donates electrons to ferredoxin. Ferredoxin then transfers these electrons to \(NADP^{+}\) (nicotinamide adenine dinucleotide phosphate). The reaction is catalyzed by the enzyme ferredoxin - \(NADP^{+}\) reductase. The equation for the reaction is \(2\) ferredoxin\(_{red}+NADP^{+}+H^{+}\to2\) ferredoxin\(_{ox}+NADPH\). Photosystem II (PSII) is involved in the oxidation of water and the donation of electrons to the electron transport chain that feeds into PSI. Ferredoxin does not transfer electrons back to PSI or PSII, and NADPH is the reduced form (the product of the electron transfer from ferredoxin to \(NADP^{+}\)).

Answer:

C. \(NADP^{+}\)