In the process of carbon fixation, three molecules of rubp combine with three molecules of co₂ to produce three six-carbon molecules, which are then split to produce 6 molecules of 3-phosphoglycerate. after phosphorylation and reduction produce 6 glyceraldehyde 3-phosphate (g3p), what more needs to happen to complete the calvin cycle?

Regeneration of RuBP

Explanation:

The Calvin cycle (C3), which is also referred to as the light independent reaction occurs after the light stage of photosynthetis. It occurs mainly in three stages viz: Carbon fixation and reduction stage has been mentioned in the question

The third stage is the regeneration stage.

After the synthesis of 6molecules of G-3-P which requires NADPH and ATP as sources of hydrogen and energy respectively, one of the G-3-P molecules is exported out of the cycle in order to contribute to the formation of other compounds (glucose molecule). The remaining 5molecules of Glyceraldehyde-3-phosphate is then used in a series of chemical reactions to regenerate the CO2 acceptor, RUBP, which will then continue CO2 assimilation for the Calvin cycle to continue. The NADP+ and ADP molecules produced during the reduction of PGA to 3GP will return to the light stage to continue the process as well.

c. heat from the poles back down towards the equator.