MDCAT Biology MCQ #247

A plant is exposed to light, and oxygen gas begins to evolve from the leaves. Which specific protein complex is responsible for this photolysis?

MDCAT Biology MCQ #247

  1. Question 1

    Q1. A plant is exposed to light, and oxygen gas begins to evolve from the leaves. Which specific protein complex is responsible for this photolysis?

    • A) Photosystem I
    • B) Photosystem II
    • C) ATP synthase
    • D) Ferredoxin

    Answer: Photosystem II

    Explanation: Water splitting (photolysis) occurs at PSII to replace lost electrons. PSI receives electrons from PSII via the electron transport chain instead.