Component II is known as Di Nitrogenase Reductase.
Component I reduces N2 to NH3.
Component II is the smaller subunit.
Mo-Fe protein is contained in component II.
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The Correct Option isD
Solution and Explanation
Step 1: Nitrogenase works as a two protein system. Dinitrogenase (component I) holds the Mo-Fe cofactor and actually reduces N2 to NH3.
Dinitrogenase reductase (component II) is the smaller Fe-only protein that shuttles electrons into component I using ATP hydrolysis.
The statement placing the Mo-Fe protein inside component II swaps the two components, so it does not match reality. Answer: Mo-Fe protein is in component II is wrong.