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.
E) It obtains carbon from a sugar molecule, so it must have a stronger attraction for electrons than either oxygen or hydrogen.

Question

Quizplus · Accepted Answer

P680+ needs to be the strongest biological oxidizing agent because it must extract electrons from water molecules, which requires a stronger attraction for electrons than oxygen has. This is essential for the process of photolysis in photosynthesis, where water is split to release oxygen, protons, and electrons.

P680+ Is Said to Be the Strongest Biological Oxidizing Agent