MDCAT Biology MCQ #241

During non-cyclic electron flow, a photon of light strikes a pigment molecule that specifically absorbs 680nm wavelength. Which structure is being activated?

MDCAT Biology MCQ #241

  1. Question 1

    Q1. During non-cyclic electron flow, a photon of light strikes a pigment molecule that specifically absorbs 680nm wavelength. Which structure is being activated?

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

    Answer: Photosystem II

    Explanation: P680 is the reaction center for PSII. P700 belongs to PSI, which is a common point of confusion for students.