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Nitrogen Fixation in Legumes

How many ATP ...

Question

How many ATP are required for the formation of one molecule of NH $_{3}$ by the nitrogenase enzyme?

A

Six

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B

Eight

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C

Twelve

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D

Sixteen

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Solution

The correct option is B Eight
Conversion of atmospheric nitrogen (N $_{2}$ ) into inorganic nitrogenous compound NH $_{3}$ by living organisms is called biological nitrogen fixation. 8 ATP are required for the formation of one molecule of NH $_{3}$ by the nitrogenase enzyme.

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