MDCAT Biology MCQ #376

What is the secondary role of carotenoids in the thylakoid membrane besides expanding the range of light absorption?

MDCAT Biology MCQ #376

  1. Question 1

    Q1. What is the secondary role of carotenoids in the thylakoid membrane besides expanding the range of light absorption?

    • A) Absorption of red light
    • B) Carbon dioxide fixation
    • C) Splitting of water molecules
    • D) Protection against photo-oxidation

    Answer: Protection against photo-oxidation

    Explanation: Carotenoids absorb blue-violet light and protect chlorophyll from photo-oxidation. They do not absorb red light (Option A) effectively.