Nitrogen-fixing bacteria and nitrifying bacteria convert atmospheric nitrogen into different compounds of nitrogen such as:
I. ammonium ion
II. ammonia
III. nitrate ion
IV. nitrite ion.
Which of the following is the correct sequence of formation of the nitrogen compounds?

Question

Quizplus · Accepted Answer

Nitrogen-fixing bacteria convert atmospheric nitrogen (N2) into ammonia (NH3), which can then be converted to ammonium ions (NH4+) by accepting a hydrogen ion (H+). Nitrifying bacteria convert ammonium ions first into nitrite ions (NO2-) and then into nitrate ions (NO3-), completing the sequence as ammonia (NH3), ammonium ion (NH4+), nitrite ion (NO2-), and nitrate ion (NO3-).

Nitrogen-Fixing Bacteria and Nitrifying Bacteria Convert Atmospheric Nitrogen into Different