MDCAT Biology MCQ #494

During cyclic photophosphorylation, electrons are recycled back to the same reaction center. Which enzyme of the non-cyclic pathway is completely bypassed?

MDCAT Biology MCQ #494

  1. Question 1

    Q1. During cyclic photophosphorylation, electrons are recycled back to the same reaction center. Which enzyme of the non-cyclic pathway is completely bypassed?

    • A) Ferredoxin
    • B) Plastocyanin
    • C) NADP+ reductase
    • D) Cytochrome complex

    Answer: NADP+ reductase

    Explanation: Cyclic flow only involves PS I; NADP+ reductase is bypassed as electrons return to the cytochrome complex instead of forming NADPH.