1. CO2 from the atmosphere diffuses into leaf through stomata & ends up in the stroma
2. Once in stroma, CO2 combines with RuBP (5 carbons) using an enzyme
3. This produces 2 molecules of G3P
4. ATP and reduced NADP from the LDR reduce G3P to TP
5. NADP is reformed and returns to LDR to be reduced again
6. Some TP converted to useful organic substances, such as glucose
7. Most TP used to regenerate RuBP using ATP from the LDR
Stroma adaptations for LIR: contains enzymes for reduction of CO2, surrounds grana (products of LDR can get there quickly), has DNA & ribosomes so it can quickly make proteins needed for LIR
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