MDCAT Biology MCQ #221

A student analyzes the absorption spectrum of a leaf extract. At which wavelengths will the primary photosynthetic pigment, chlorophyll a, show maximum peaks?

MDCAT Biology MCQ #221

  1. Question 1

    Q1. A student analyzes the absorption spectrum of a leaf extract. At which wavelengths will the primary photosynthetic pigment, chlorophyll a, show maximum peaks?

    • A) Green and yellow light
    • B) Blue-violet and red light
    • C) Green and orange light
    • D) Yellow and indigo light

    Answer: Blue-violet and red light

    Explanation: Chlorophyll a absorbs mainly blue-violet and red light. Option C fails because green light is reflected, not absorbed, by most photosynthetic pigments.