MDCAT Biology MCQ #153

The splitting of water molecules during the light reaction releases oxygen and protons. Which component of the photosynthetic machinery directly receives the resulting electrons?

MDCAT Biology MCQ #153

  1. Question 1

    Q1. The splitting of water molecules during the light reaction releases oxygen and protons. Which component of the photosynthetic machinery directly receives the resulting electrons?

    • A) Photosystem I
    • B) NADP+ Reductase
    • C) Cytochrome complex
    • D) Photosystem II

    Answer: Photosystem II

    Explanation: Water splitting (photolysis) provides electrons to P680 in PSII; PSI receives electrons from the electron transport chain, not directly from water.