6. Light Reaction Is absorbed by Chlorophyll a (energy carrier) Becomes energized chlorophyll that supplies energy to Split H 2 O and Add P 2H O 2 ADP (energy carrier) Trapped by NADP released forming ATP- stores energy (H acceptor) Forming NADPH2 For use in the dark reaction
7. Dark Reaction CO2 Combines with RDP, a 5-C sugar in the chloroplast(CO2 acceptor) To form a very unstable 6-C sugar This splits quickly and forms 2 PGA, a 3-C compound Combines with 2H supplied by NADPH2 from the light reaction (energy supplied by conversion of ATP to ADP) forms PGAL H2O Can be used as nutrient or converted to RDP Glucose Used to combine with CO2 and By combining 2 molecules of PGAL and substituting H for a phosphate