Light Independent Reaction

• • The light independent reaction occurs in the stomata.
  • ATP and NADPH is used to convert CO2 into glucose.
• The LIR doesn't need light directly but it does need ATP and NADPH produced during LDR, so without light it will quickly stop.
• LIR Part1:

  • RuBisCO enzyme combines CO2 with RuBP to form an unstable C6 compound.
  • This breaks into 2x GP.
  • GP is reduced by NADPH to form triose phosphate. Hydrolysis of ATP supplies the energy for the reduction. NADP is reformed and passes back to the light dependant reaction.
• Per 6 turns of the cycle:

  • 5/6 of TP is converted back to RuBP using ATP
  • 1/6 of TP is used to produced organic molecules.