The calvin cycle requires each of the following inputs EXCEPT: ATP NADPH O2 CO2 9. In the light dependent reactions, when light strikes the pigments (P700 or P680) what is the immediate result? excited electrons are passed to electron acceptors electrons are fused to form ATP glucose is produced carbon fixation.
Photosynthesis removes carbon dioxide from the atmosphere, while respiration and combustion add it. When neither photosynthesis or respiration is taking place, the carbon dioxide from the air combines with water to produce bicarbonate, a source for aquatic producers like algae.