MDCAT Biology MCQ #228

In the Z-scheme of non-cyclic photophosphorylation, what is the immediate fate of an electron after it is excited in Photosystem II (P680)?

MDCAT Biology MCQ #228

  1. Question 1

    Q1. In the Z-scheme of non-cyclic photophosphorylation, what is the immediate fate of an electron after it is excited in Photosystem II (P680)?

    • A) Primary electron acceptor
    • B) Cytochrome complex
    • C) Plastocyanin
    • D) Ferredoxin

    Answer: Primary electron acceptor

    Explanation: Pheophytin (or the primary acceptor) receives electrons from PSII. Option C is incorrect because plastocyanin delivers electrons to PSI, not from PSII.