NURSING ANM AND GNM

Detailed explanation-1: -The nitrogen molecule is composed of two nitrogen atoms joined by a triple covalent bond, thus making the molecule highly inert and nonreactive. Nitrogenase catalyzes the breaking of this bond and the addition of three hydrogen atoms to each nitrogen atom.

Detailed explanation-2: -So, the correct answer is ‘Nitrogen fixation’.

Detailed explanation-3: -The two nitrogen atoms in N2 are connected by an extremely stable triple bond, which does not easily break. Just a few species of bacteria and archaea, called nitrogen fixers, can break the N2 triple bond. In a process called nitrogen fixation, these microbes convert N2 into NH4+.

Detailed explanation-4: -Bacteria and archaea in the soil and in the roots of some plants have the ability to convert molecular nitrogen from the air (N2) to ammonia (NH3), thereby breaking the tough triple bond of molecular nitrogen. Such organisms are called “diazotrophs".