But each turn makes two G3Ps, thus three turns make six G3Ps. One is exported while the remaining five G3P molecules remain in the cycle and are used to regenerate RuBP, which enables the system to prepare for more CO2 to be fixed. Three more molecules of ATP are used in these regeneration reactions.
The Calvin cycle, also known as the biosynthetic phase, the dark reactions, the light-independent reactions, or the photosynthetic carbon reduction cycle, is a set of chemical processes that turns carbon dioxide and hydrogen-carrier molecules into glucose.
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