Kindly answer the question
Solution:
The correct option is (A).
The complex formed by the nitrogenase enzyme (nitrogen-fixing enzyme) is sensitive to oxygen. It gets irreversibly inactivated when exposed to even low concentrations of O2.
Enzyme nitrogenase evolved during the pre-oxygenated state of the atmosphere on earth. Diazotrophic organisms like Rhizobium had to evolve mechanisms to protect nitrogenase from inactivation after the appearance of oxygen on earth.
The correct option is (A).
The complex formed by the nitrogenase enzyme (nitrogen-fixing enzyme) is sensitive to oxygen. It gets irreversibly inactivated when exposed to even low concentrations of O2.
Enzyme nitrogenase evolved during the pre-oxygenated state of the atmosphere on earth. Diazotrophic organisms like Rhizobium had to evolve mechanisms to protect nitrogenase from inactivation after the appearance of oxygen on earth.