Final answer:
G3P from the Calvin cycle is converted into fructose 6-phosphate and glucose 1-phosphate in the cytoplasm and is essential for the formation of carbohydrates like glucose.
Step-by-step explanation:
The G3P (glyceraldehyde-3-phosphate) produced during the Calvin cycle is transported into the cytoplasm where it is usually converted into fructose 6-phosphate and glucose 1-phosphate. This occurs because one of the G3P molecules leaves the Calvin cycle to contribute to the formation of carbohydrate molecules such as glucose, which requires six carbon atoms. Since the Calvin cycle turns three times to fix enough net carbon to export one G3P and each turn makes two G3Ps, this results in the generation of six G3Ps, where one is exported and the remaining are used to regenerate RuBP with the use of additional ATPs, allowing for continuous carbon fixation and synthesis of energy-rich carbohydrates.