Why is CO2 removed in the Calvin cycle?

Answer 1

CO2, along with ATP and NADPH, is used in the calvin-cycle to make G3P, which then, in most cases, is combined with other G3P to make Glucose.

Answer 2

CO2 is removed in the Calvin cycle because it is used as a substrate to build carbohydrate molecules, particularly sugars like glucose. Through a series of enzyme-catalyzed reactions, CO2 is transformed into organic compounds, serving as the primary source of carbon for the production of sugars in photosynthetic organisms.