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With regard to the bilogical nitrogen fi...

With regard to the bilogical nitrogen fixation by Rhizobium in association with soy bean, which one of the following statement/statements does not hold true?

A

Nitrogenase may require oxgyen for its functioning

B

Nitrogenase is MO-Fe protein

C

Leg -haemoglobin is a pink coloured pigment

D

Nitrogenase helps to convert `N_(2)` gas into tow molecular of ammonia

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