MDCAT Biology MCQ #339

During non-cyclic electron flow in photosynthesis, water molecules are split to provide electrons. Where exactly is the oxygen-evolving complex located?

MDCAT Biology MCQ #339

  1. Question 1

    Q1. During non-cyclic electron flow in photosynthesis, water molecules are split to provide electrons. Where exactly is the oxygen-evolving complex located?

    • A) Outer surface of thylakoid membrane
    • B) Inner surface of thylakoid membrane
    • C) Stroma of the chloroplast
    • D) Intermembrane space of chloroplast

    Answer: Inner surface of thylakoid membrane

    Explanation: Water photolysis occurs on the thylakoid lumen side. Stroma is incorrect because it hosts the Calvin cycle enzymes, not the oxygen-evolving complex.