Light-Independent Reaction

    Cards (24)

    • What is the light-independent reaction of photosynthesis called?
      Calvin cycle
    • Where does the Calvin cycle take place?
      In the stroma
    • What type of energy is not required for the Calvin cycle?
      Light energy
    • What is the role of photosynthetic enzymes in the Calvin cycle?
      They facilitate the reactions of the cycle
    • What is the 5C compound involved in the Calvin cycle?
      Ribulose Bisphosphate (RuBP)
    • What does RuBP combine with during carbon fixation?
      Carbon dioxide (CO2)
    • What enzyme catalyzes the reaction of RuBP and CO2?
      Ribulose Bisphosphate Carboxylase (RUBISCO)
    • What happens to the 6C compound produced in carbon fixation?
      It breaks down into 2 3C compounds
    • What are the 3C compounds formed from the breakdown of the 6C compound?
      Glycerate-3-phosphate (GP)
    • What is the next step after forming GP in the Calvin cycle?
      GP is reduced to GALP
    • What provides the hydrogen for the reduction of GP to GALP?
      Reduced NADP from the LDR
    • What type of reaction occurs when GP is reduced to GALP?
      Endothermic reaction
    • What is required to supply energy for the reduction of GP?
      ATP
    • What happens to one carbon atom from the GALP molecules?
      It is removed from the cycle
    • What is the end product formed from the removal of carbon atoms from GALP?
      Glucose (hexose sugar)
    • What happens to the remaining 5C atoms in the Calvin cycle?
      They resynthesize RuBP
    • What process is required to resynthesize RuBP?
      Phosphorylation
    • How many times must the Calvin cycle complete to produce one glucose molecule?
      Six times
    • How many CO2 molecules are required to produce one glucose molecule?
      Six CO2 molecules
    • How many reduced NADP and ATP are needed for one glucose molecule?
      12 reduced NADP and 12 ATP
    • How many cycles of the light-dependent reactions (LDR) are required for one glucose molecule?
      Six cycles
    • What is produced as a byproduct of the Calvin cycle?
      Oxygen (O2)
    • Why is glucose stored as starch in starch grains?
      Starch has a lower osmotic impact
    • What is the advantage of starch being more compact?
      It results in greater storage capacity