MDCAT Biology MCQ #415

A herbicide blocks the Z-scheme at the point where water is split. Which specific protein complex is the direct target of this herbicide?

MDCAT Biology MCQ #415

  1. Question 1

    Q1. A herbicide blocks the Z-scheme at the point where water is split. Which specific protein complex is the direct target of this herbicide?

    • A) Photosystem I
    • B) Cytochrome complex
    • C) Photosystem II
    • D) ATP synthase

    Answer: Photosystem II

    Explanation: Photosystem II (P680) is responsible for the photolysis of water. Photosystem I is wrong because it primarily reduces NADP+.