In light reactions,which of the following is the reducing agent and the ultimate oxidizing agent respectively? A)NADP⁺ and NADPH B)ADP and ATP C)H?O and NADP⁺ D)NADPH and NADP⁺

Question

Quizplus · Accepted Answer

In light reactions, water (H₂O) is the reducing agent, meaning it donates electrons to the electron transport chain, and NADP+ is the ultimate oxidizing agent, meaning it accepts electrons to become NADPH. Therefore, the correct answer is C, as the reducing agent is H₂O and the ultimate oxidizing agent is NADP+. A is incorrect as NADP+ is the electron acceptor and will become NADPH, not the other way around. B is incorrect as ADP and ATP are involved in the process of ATP synthesis and are not reducing or oxidizing agents. D is incorrect as NADPH is not the reducing agent but rather it represents the reduced form of NADP+.

In Light Reactions,which of the Following Is the Reducing Agent