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.

Question

Quizplus · Accepted Answer

P680⁺ must be a strong oxidizing agent to extract electrons from water molecules, which involves breaking the strong O-H bonds in water, thus requiring a stronger attraction for electrons than oxygen.

P680⁺ Is Said to Be the Strongest Biological Oxidizing Agent