Photosynthesis
Calvin Cycle Calvin Cycle (Light-Independent Reaction)
• CO2 is converted into a
carbohydrate (PGAL).
• Occurs in the Stroma.
• Energy stored from the light
reaction is used to power the
production of sugar.
– Energy from ATP is used to form
bonds between C, H, O
• Breaks ATP into ADP & P
– NADPH carries Hydrogen to
stroma – drops it off and goes to
pick up another from Thylakoid
– 3 CO2 molecules needed
• PGAL = 3 carbon sugar that is
used to make Glucose or other
carbohydrates.