Question

Ammonia formation from free N2 cannot be done without the help of
A)K and Mn. B)Mo and Fe C)Ca and Mg D)B and Mn​

Answer 1

Option (B) MO and Fe is the correct answer

Explanation:

MECHANISM OF BIOLOGICAL NITROGEN FIXATION

• Fixation of N2 is done with the help of enzyme nitrogenase which functions under anaerobic conditions.

• The enzyme nitrogenase consists of two sub-units , a non-haeme iron protein commonly called Fe protein (or dinitrogen reductase) and an iron molybdenum protein called Mo-Fe protein (dinitrogenase) . the overall biochemical reaction is as follows:

• N₂ + 8e- +8H⁺ + 16ATP ------------> 2NH₃ +H₂ + 16ADP + 16Pi

• Ammonia synthesis by nitrogenase requires a very high input of energy , 8ATP for each NH₂ produced, which comes through respiration.