> CO2 from the atmosphere diffuses into the leaf through stomata > dissolves in water around the walls of the mesophyll cells > diffuses through the plasma membrane, cytoplasm and chloroplast membranes into > stroma.
> In the stroma the CO2 combines with the 5-Carbon compound (RuBP) using an enzyme.
> This combination produces two molecules of the 3-carbon glycerate 3-phosphate (GP).
> The ATP and reduced NADP from the LDR are used to reduce the activated GP into triose phosphate (TP).
> The NADP is reformed and goes back to the LDR to be reduced again by accepting more hydrogen.
> Some TP molecules are converted to useful organic substances, such as glucose.
> Most TP molecules are used to regenerate RuBP using ATP from the LDR.
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