AP BIOLOGY

Detailed explanation-1: -Nitrification. Nitrification is the process that converts ammonia to nitrite and then to nitrate and is another important step in the global nitrogen cycle. Most nitrification occurs aerobically and is carried out exclusively by prokaryotes.

Detailed explanation-2: -Nitrogen fixation or Biological Nitrogen Fixation (BNF) is a chemical process by which molecular nitrogen (N. 2), which has a strong triple covalent bond, is converted into ammonia (NH.

Detailed explanation-3: -The process of conversion of ammonia or reduced nitrogen compounds into the easily absorbable form of nitrogen that is nitrates and nitrites. It is an aerobic process. Chemoautotrophic bacteria play a major role in this process.

Detailed explanation-4: -Nitrogen gas makes up 78% of the air we breathe. Most nitrogen enters ecosystems via certain kinds of bacteria in soil and plant roots that convert nitrogen gas into ammonia (NH3). This process is called nitrogen fixation.

Detailed explanation-5: -Nitrification is a microbial process by which reduced nitrogen compounds (primarily ammonia) are sequentially oxidized to nitrite and nitrate. Ammonia is present in drinking water through either naturally-occurring processes or through ammonia addition during secondary disinfection to form chloramines.