Photosynthesis Part 2 Light Independent Reaction

Remember ATP fuels all reactions that require energy Building glucose molecules will require ATP as a source of energy Other molecules needed are CO2 from the atmosphere NADPH (Electron carrier from light reaction)

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Light Independent Reaction Calvin Cycle Four things happen during the cycle 1. Carbon dioxide incorporated into existing molecules 2. Carbon compounds gain electrons from NADPH 3. Glucose is made 4. Ribulose bisphosphate remade so cycle can continue

LIR or Calvin Cycle Carbon dioxide combined with RuBP LR LR LR Using left over carbon and other atoms to remake RUBP Electrons from NADPH given to other molecules ½ of a glucose molecule

Photosynthesis What can glucose be used for? Raw materials for building other molecules. Energy source to make ATP and drive endothermic reactions!