Answer to Question #196566 in Microbiology for Sanjeshni

Question

Define and state one organism responsible for these process: ammonification, 

nitrification, denitrification, nitrogen fixation, decomposition

Answer 1

Answers:

Ammonification; is the process of conversion of organic nitrogen (nitrogen contained in living organisms) into inorganic ammonia (NH₃) or ammonia ions (NH₄) by ammonifying bacteria such as Bacillus vulgaris.

Nitrification; it's the of conversion of Ammonia (NH₃)to nitrates (NO₂^-) and nitrites (NO₃^-) by soil living bacteria (nitrifying bacteria) such as Nitrosomonas sp.

Denitrification; it's part of nitrogen cycle where nitrates are reduced in the soil to molecular nitrogen (N₂) which is then released into the atmosphere by organisms such as Pseudomonas and Paracoccus.

Nitrogen fixation; it is where the atmospheric nitrogen (N₂) is converted into nitrogen compounds for plants and animals use. One organism responsible for nitrogen fixation is Rhizobium.

Decomposition; this refers to the breakdown of complex molecules composing of dead organisms into simple nutrients that are re-utilized by living organisms. Organism such as bacteria or fungi are responsible for decomposition.