Biology / Bio 0605 · Procedure · 60–90 seconds
The Calvin Cycle: Three Stages
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The Calvin cycle runs three stages — fixation, reduction, and regeneration — using ATP and NADPH from the light-dependent reactions to build carbohydrate from carbon dioxide in the stroma.
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Only one G3P leaves the cycle for every three turns — the other five are spent regenerating RuBP so the cycle can continue at all.