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How many turns of Calvin cycle and how many ATP molecules will be required for synthesis of one molecule of sucrose?

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a
6 Calvin cycle and 18 ATP
b
12 Calvin cycle and 36 ATP
c
2 Calvin cycle and 3 ATP
d
12 Calvin cycle and 18 ATP

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detailed solution

Correct option is B

For the synthesis of 1 molecule of glucose the has to be 6 rounds of Calvin cycle and utilization of 18 ATP. Therefore, for synthesis of one molecule of sucrose (glucose+fructose) the calvin cycle has to occur (6x2= 12 times) and the number of ATP utilised would be (18 x 2= 36 ATP).

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