Photosynthesis Page 5
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Light Dependent
Reactions
Light Independent Reactions
II. Calvin Benson Cycle (C3 Photosynthesis)
A. Chloroplast stroma
B. 6 CO2 + 12 NADPH +18 ATP -> 1 C6H2O6 + 12 NADP + 18 ADP + 18 Pi + 6 H2O
C. One complete cycle fixes one molecule of CO2
1. Six complete cycles fixes enough CO2 to make one molecule of glucose
2. RuBP = Ribulose Bisphosphate
3. PGA = Phosphoglycerate
3. PGAL = Glyceraldehyde phosphate
4. RuMP = Ribulose Monophosphate
5. PGAL can be converted into
a. Hexose sugars (Sucrose, Starch, Cellulose)
b. Amino Acids
c. Fatty Acids
d. Nitrogenous Bases
via various metabolic pathways
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