Question

During photosynthesis, the process of carbon fixation, Rubisco Bisphosphate (RuBP) attaches a CO2 to produce a 6 carbon molecule. The resulting molecule then split in two. Following this phosphorylation and reduction occurs. What more needs to happen in the Calvin cycle?

Answer 1

The final step of the Calvin cycle that occurs after fixation, phosphorylation, and reduction is the regeneration of ribulose-1,5-bisphosphate that is further used for the fixation of carbon dioxide in the new cycle. Regeneration of ribulose-1,5-bisphosphate requires ATP and uses glyceraldehyde-3-phosphate produced in the earlier steps of the Calvin cycle.