MDCAT Biology MCQ #449

While studying the two phases of photosynthesis, a researcher notes a functional dependency. How does the light reaction differ from the dark reaction?

MDCAT Biology MCQ #449

  1. Question 1

    Q1. While studying the two phases of photosynthesis, a researcher notes a functional dependency. How does the light reaction differ from the dark reaction?

    • A) The light reaction fixes CO2 into organic molecules
    • B) The light reaction provides the energy carriers for the dark reaction
    • C) The dark reaction occurs only during the nighttime in plants
    • D) The dark reaction takes place inside the thylakoid lumen

    Answer: The light reaction provides the energy carriers for the dark reaction

    Explanation: The light reaction produces ATP and NADPH, which are then used as the energy source for the light-independent (dark) reaction.