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Biology LibreTexts

Calvin Cycle TED-ED

  • Page ID
  • Nature’s Smallest Factory

    1. Energy exists in the form of ____________________ made by the plant.
    2. Plants get their carbon from the __________________.
    3. Photosynthesis occurs in two steps, the second is the _____________________. 
    4. RuBP contains __________ carbons.
    5. The enzyme, _________________________ builds an initial  6 carbon sequence.
    6. This sequence split into two short chains called _________.
    7. NADPH transfers a __________________ to those molecules, they become G3P.
      Glucose needs 6 carbons to form, made from two molecules G3P.     Sugar has been manufactured, but not quite…..
    8. The original RuBP must be _________________________.
    9. How many production lines are going on at the same time? _____
    10. How many carbons exist from all of these production lines? ______
    11. How many of these are used to make glucose? _____          To make RuBP? ______
    12. The molecular mix and match ensures that _______ RuBP are regenerated.

    Summarize the Stage



      Molecules involved


    stage 1.png x3


    stage 2.1.pngx3

                stage 2.2.png  Glucose 


    stage 3.png x2


    Label the Calvin Cycle     

     (It takes 2 turns to fix 6 carbon atoms from CO2)

    calvin cycle.png


    regeneration of RUBP
    carbon fixation

    3 molecules of CO2

    6 ATP → 6 ADP
    3 ATP →  3 ADP