During fixation of one molecule of `CO_(2)` by `C_(3)` plants, number of ATP and NADPH_(2)` required are

Options

A. 3ATP and 2`NADPH_(2)`
B. 5ATP and `NADPH_(2)`
C. 12 ATP and `12 NADPH_(2)`
D. 2ATP and 3 `NADPH_(2)`

Answer

A

Explanation

For every `C_(2)` molecule entering the Calvin cycle 3 molecules of ATP and 2 molecules odf NADPH are required. To make one molecule of glucose, 6 turns of the cycles are requried (6xx2ATP=18ATP and 6xx2 NADPH=12NADPH).