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Photosynthesis stores energy in glucose
o Light energy used to make glucose from H2O and CO2 (light energy chemical energy)
o Light Energy + 6CO2 + 6H2O C6H12O6 (glucose) + 6O2
Key Terms
o Metabolic Pathway ­ series of reactions controlled by enzymes e.g respiration &
o Phosphorylation…

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The Light-Dependent Reaction
Photophosphorylation ­ When ATP is made in the light dependent r.
o Light energy absorbed by photosystems used to:
o Make ATP from ADP and an inorganic phosphate (Pi) (photophosphorylation).
o Make reduced NADP from NADP.
o Split water into protons (H+), electrons and oxygen (photolysis)…

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The Light-Independent Reaction (Calvin Cycle)
o In the stroma of chloroplasts.
o Makes triose phosphate (TP) from CO2 and ribulose bisphosphate (5C compound)
o TP can be used to make glucose & other useful organic substances.
o Calvin Cycle requires ATP and H+ for energy.
o The starting compound,…


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