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Light independent reaction
Hydrogen ions from water join CO2 molecules to make glucose
where does it happen?
in stroma, after the light dependent reactions
what does light independent reactions need?
ATP and NADPH from light dependent reactions
1) Carbon Fixation
CO₂ attaches to RuBP (5-carbon) → forms an unstable 6-carbon molecule
2) Reduction Phase?
PGA is activated by ATP and reduced by NADPH → forms PGAL (G3P).
RuBP
ribulose biphosphate
role of PGAL?
forms glucose, regenerates RuBP and acts as energy for carbon fixation
3) RuBP regenerated
Why does 2 PGAL molecules leave the chloroplasts during reduction?
used to make one glucose molecule