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Photosynthesis light independent reaction

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  • 1. Two metabolic pathways LIGHT DEPENDENT LIGHT INDEPENDENT 16 ADP + 16Pi 16 ATP 12 NADP + 12H 12 NADPH12 H2O 24 H+ + 6O2
  • 2. LIGHT INDEPENDENT REACTION (CALVIN-BENSON CYCLE)1. OCCURS STROMA2. REQUIRES (USES) material from CO2 Air ATP & NADPH Light Dependent RIBULOSE BIPHOSPHATE (RuBP) In chloroplast ENZYMES In membranes
  • 3. NAMING COMPOUNDS CO2 H2O PGARIBULOSE BIPHOSPHATE RuBP G3 P GLUCOSE
  • 4. COUNTING CARBONS - 1 ROTATION 2. ADD 1 ONE CARBON ATOM 1 3. BREAKS INTO TWO THREE CARBON1. HAVE 1 FIVE CARBON ATOMS ATOMS PGA RuBP 5 65. NEED TO REGENERATE THE 4. REARRANGES INTO TWO DIFFERENT STARTING FIVE CARBON THREE CARBON ATOM. G3P ATOMS SO REMOVE 1 CARBON 6 1 6. NOT YET
  • 5. COUNTING CARBONS - 6 ROTATIONS 2. ADD 6 ONE CARBON ATOM 6X1=6 3. BREAKS INTO TWELVE THREE CARBON ATOMS1. HAVE 6 FIVE CARBON ATOMS 12 X 3 = 36 6 X 5 = 30 ATP ADP + P NADPH NADP + H 5. TO REGENERATE THE SIX STARTING FIVE CARBON ATOMS NEED TO 4. REARRANGES INTO REMOVE SIX CARBONS TWELVE DIFFERENT THREE CARBON ATOMS. 36 – 6 = 30 12 X 3 = 36 6. GLUCOSE