P680⁺ Is Said to Be the Strongest Biological Oxidizing Agent

question 43

Multiple Choice

P680⁺ is said to be the strongest biological oxidizing agent. Given its function, why is this necessary?

• A) It is the receptor for the most excited electron in either photosystem of photosynthesis.
• B) It is the molecule that transfers electrons to plastoquinone (Pq) of the electron transfer system.
• C) It transfers its electrons to reduce NADP⁺ to NADPH.
• D) It obtains electrons from the oxygen atom in a water molecule, so it must have a stronger attraction for electrons than oxygen has.

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