Biogeochemical Cycles

Art Connections

Figure Which of the following statements about the nitrogen cycle is false?

  1. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+).
  2. Denitrification by bacteria converts nitrates (NO3) to nitrogen gas (N2).
  3. Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2).
  4. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.

Hint:

Figure C: Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2).