How many turns of Calvin cycle are required for the formation of three molecules of glucose ?

Step-by-step solution

One turn of the Calvin cycle fixes one molecule of CO₂ . To synthesize one molecule of glucose ( C₆H₁₂O₆ ), six molecules of CO₂ are required. Thus, six turns of the Calvin cycle are required to produce one molecule of glucose. For the formation of three molecules of glucose, the number of turns required is 3 6 = 18 . Answer: 18