In each complete run of the Calvin Cycle, six molecules of carbon dioxide eventually produce one molecule of glucose (C6H12O6).In each turn of the cycle, the 5-carbon molec … ule ribulose biphosphate (RuBP) bonds with an incoming carbon dioxide molecule to create a 6-carbon molecule.This 6-carbon molecule breaks into two 3-carbon molecules of phosphoglycerate (PGA).wo of these molecules are removed from the cycle to make one glucose molecule. The remaining PGAL molecules use ATP energy to reform six RuBP molecules, and thus start the cycle again.