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    • #2599
      shardy7984
      Participant

      I have a question about Rubisco & light reactions.

      Why does a poison that inhibits rubisco in the Calvin Cycle, also inhibit light reactions?

      Is it b/c of carbon fixation & photorespiration? Or does that have nothing to do with it? But Oxygen is the poison that inhibits the enzyme right?
      Sorry, this is something that just confuses me.

    • #33211
      MasterChief
      Participant

      Poison that affects rubisco causes a stop in the calvin cycle. This means that all the NADPH from the light reactions have no where to place their electrons and become NADP+. This causes a stop in the light reactions because excitating the electrons in chlorophyll no longer produces useable electrons.

    • #33224
      shardy7984
      Participant

      THANK YOU 😀

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