N'ime osisi, cyanobacteria na algae, photosynthesis oxygen na-ekewa mmiri, na oxygen na-emepụta dị ka ihe mmefu. Usoro a na-eji ATP na NADPH mepụtara site na photosynthetic mmeghachi omume emmepe, dị ka akọwara n'elu, iji tọghata CO2 n'ime glycerate 3-phosphate, nke nwere ike mgbe ahụ ghọọ glucose. Nke a carbon-fixation mmeghachi omume na-rụrụ site enzyme RuBisCO dị ka akụkụ nke Calvin <unk> Benson okirikiri. Atọ ụdị photosynthesis eme na osisi, C3 carbon fixation, C4 carbon fixation na CAM photosynthesis.
inorganic ogige