NEET Biology question

Not in NEET syllabus

With regard to the biological nitrogen fixation by *Rhizobium* in association with soybean, which one of the following statements does not hold true?

(A)Nitrogenase may require oxygen for its functioning.Correct
(B)Nitrogenase is a Mo-Fe protein.
(C)Leghaemoglobin is a pink-coloured pigment.
(D)Nitrogenase helps to convert N2 gas into two molecules of ammonia.

Answer: (A)

Solution

Nitrogenase is extremely oxygen-sensitive and is inactivated by free oxygen, so it requires an anaerobic (oxygen-free) environment, not oxygen, for its

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Question ID VK-113043