What is a reactant in the calvincycle?

In the Calvin cycle, a key reactant is carbon dioxide (CO2), which is fixed into organic molecules during the process. Additionally, ATP (adenosine triphosphate) and NADPH, produced in the light-dependent reactions of photosynthesis, serve as energy and reducing power, respectively. Together, these reactants drive the conversion of CO2 into glucose and other carbohydrates, essential for plant energy and growth.