Carbon dioxide
The reactant in the Calvin cycle is carbon dioxide (CO2) from the atmosphere. This carbon dioxide is fixed and converted into organic molecules, such as glucose, through a series of enzymatic reactions in the Calvin cycle.
ATP, NADPH, and CO2
Carbon dioxide is the reactant used in the Calvin cycle. It is combined with ribulose-1,5-bisphosphate (RuBP) by the enzyme Rubisco to initiate the process of carbon fixation and ultimately produce glucose.
RuBP
RuBP
RuBP
RuBP
RuBP
RuBP
RuBP
RuBP
RuBP