Question

Elements associated with nitrogenase enzyme in biological nitrogen fixation
(A) Molybdenum
(B) Iron
(C) Copper
(D) Nickel
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only
• B. (A) and (B) only
• C. (A), (B), (C) and (D)
• D. (B), (C) and (D) only

Hint:

Mo, Fe, and Ni are essential for nitrogenase enzyme activity in nitrogen fixation.

Answer 1

The Correct Option is A

Nitrogenase, the key enzyme in nitrogen fixation, is a metalloenzyme that requires molybdenum and iron. Nickel also supports some bacterial strains. Copper, though essential for other enzymes, is not directly involved in nitrogenase activity.