Answer:
During the assimilation process
Step-by-step explanation:
Nitrosomonas bacteria first convert nitrogen gas to nitrite (NO₂⁻) and subsequently nitrobacter convert nitrite to nitrate (NO₃⁻), a plant nutrient. Plants absorb ammonium and nitrate during The assimilation process, after which they are converted into nitrogen-containing organic molecules, such as amino acids and DNA.