MDCAT Biology MCQ #435

The reaction centers of Photosystem I and Photosystem II are both composed of which specific pigment molecule?

MDCAT Biology MCQ #435

  1. Question 1

    Q1. The reaction centers of Photosystem I and Photosystem II are both composed of which specific pigment molecule?

    • A) Chlorophyll b
    • B) Xanthophyll
    • C) Chlorophyll a
    • D) Carotene

    Answer: Chlorophyll a

    Explanation: P680 and P700 are both Chlorophyll a molecules. Chlorophyll b is tempting but it is never the reaction center pigment.