What are the Mechanism of Nitrogen fixation?

1.	What are the Mechanism of Nitrogen fixation?
Answer» Mechanism of Nitrogen fixation : An enzyme Nitrogenase (Mo-Fe protein complex) catalyses the conversion of N₂ into NH₃ in root nodules. Enzyme Nitrogenase is highly sensitive to molecular oxygen and requires anaerobic condition to function. Anaerobic condition in root nodules is provided by a pink coloured pigment called as leg haemoglobin which acts as oxygen scavenger by binding with O₂. Leg-haemoglobin is product of interaction between Rhizobium & leguminous plant. Either of two cannot have it alone.

Answer»

Mechanism of Nitrogen fixation :

An enzyme Nitrogenase (Mo-Fe protein complex) catalyses the conversion of N₂ into NH₃ in root nodules.
Enzyme Nitrogenase is highly sensitive to molecular oxygen and requires anaerobic condition to function.
Anaerobic condition in root nodules is provided by a pink coloured pigment called as leg haemoglobin which acts as oxygen scavenger by binding with O₂. Leg-haemoglobin is product of interaction between Rhizobium & leguminous plant. Either of two cannot have it alone.

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