To sum it up… Light dependent reactions use: water, ADP, NADP+ Light dependent reactions produce: oxygen, ATP, NADPH ATP and NADPH provide energy to build high energy sugars.

The Calvin Cycle (in Stroma) Uses ATP and NADPH from light dependent reactions to make high energy sugars Does NOT need light (light independent)

6 CO2 molecules enter cycle from the air and combine with six 5-carbon molecules The twelve 3-C molecules are converted to higher energy forms Where does this energy come from? 2 of the 3-C molecules are removed from the cycle to make sugars, lipids, amino acids and other cmpds needed by plant

The ten 3-C molecules left are turned back into six 5-C molecules They combine with 6 new CO2 and begin next cycle To Sum it up… The Calvin Cycle uses CO2 to produce one 6-C sugar (energy from ATP, NADPH)

Factors that affect Photosynthesis Water Temperature Light intensity