Question

multiple choice question the result of the second electron transport system in the light - dependent reactions is the production of
○ nadph.
○ atp.
○ o₂.
○ water.

Explanation:

In light - dependent reactions of photosynthesis, the first electron transport system (associated with photosystem II) is involved in ATP production and oxygen release from water splitting. The second electron transport system (associated with photosystem I) uses electrons to reduce $NADP^+$ to $NADPH$. ATP is mainly produced in the first electron transport chain (via chemiosmosis related to photosystem II), $O_2$ is produced from water splitting in photosystem II, and water is not a product of the second electron transport system. So the result of the second electron transport system is the production of NADPH.

Answer:

A. NADPH