For every CO 2 molecule entering the Calvin cycle- the number of ATP and NADPH required isA- 2 ATP -3 NADPHB- 2 ATP - 2 NADPHC- 3 ATP -2 NADPHD- 3 ATP -3 NADPH

The correct option is C 3 ATP + 2 NADPH For every molecule of CO2 entering the Calvin cycle, 3 molecules of ATP and 2 molecules of NADPH are used. To meet the ...

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Standard XII

Biology

Energy Expenditure in Calvin Cycle

For every CO ...

Question

For every CO₂ molecule entering the Calvin cycle, the number of ATP and NADPH required is

2 ATP + 2 NADPH

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3 ATP + 2 NADPH

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2 ATP + 3 NADPH

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3 ATP + 3 NADPH

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Solution

The correct option is B
3 ATP + 2 NADPH

For every molecule of CO₂ entering the Calvin cycle, 3 molecules of ATP and 2 molecules of NADPH are used. To meet the difference in the number of ATP and NADPH used in the Calvin cycle is probably why cyclic photophosphorylation takes place, as it releases only one molecule of ATP, whereas non-cyclic photophosphorylation releases one molecule of ATP and NADPH each.

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For every CO2 molecule entering the Calvin cycle, the number of ATP and NADPH required is

For every CO₂ molecule entering the Calvin cycle, the number of ATP and NADPH required is