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The Calvin cycle

The light-independent reaction of photosynthesis on one map. Tap a molecule or an arrow for what happens there. Pick your exam board for its wording, count the carbons, then quiz yourself or try an exam question.

The Calvin cycle RuBP, GP and triose phosphate sit on a loop. Arrows show each step, coloured by step. Dashed arrows show carbon dioxide, ATP and reduced NADP joining the loop. The same steps are listed as a table below the map.
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Every step on the map

The same steps as the map, as a list, in the wording of the board you picked. Use it to revise, or print this page.

Carbon count