Out of the 6 molecules of G3P, how many molecules are used to make glucose?

Explanation

The Calvin Cycle, the light-independent reactions of photosynthesis, produces three molecules of glyceraldehyde-3-phosphate (G3P) for every three molecules of carbon dioxide that enter the cycle. However, it takes two turns of the Calvin Cycle to produce one molecule of glucose. Each turn produces one molecule of G3P, and three G3P molecules are needed to form one molecule of glucose. Therefore, out of the 6 molecules of G3P produced in two turns of the Calvin Cycle, only 1 molecule is used to make glucose, and the remaining 5 molecules are used to regenerate the molecules needed to continue the cycle.