MDCAT Biology MCQ #170

When a plant cell has high NADPH levels but low ATP, it switches to cyclic photophosphorylation. What is the sole product of this pathway?

MDCAT Biology MCQ #170

  1. Question 1

    Q1. When a plant cell has high NADPH levels but low ATP, it switches to cyclic photophosphorylation. What is the sole product of this pathway?

    • A) ATP only
    • B) NADPH only
    • C) ATP and NADPH
    • D) ATP, NADPH, and Oxygen

    Answer: ATP only

    Explanation: Cyclic flow involves only PSI and produces ATP without NADPH; non-cyclic flow is more common but requires both photosystems to function.