Assignment Help - homework help

  Nitrogen cycle

Nitrogen cycle:

Nitrogen consist highest concentration in the atmosphere. It is also a necessary constituent of proteins and chlorophyll found in organisms. The key procedures of biogeochemical cycling of nitrogen are nitrogen fixation, nitrification, ammonification, and denitrification.

i) Nitrogen fixation:

The transformation of molecular nitrogen into a nitrogenous compound is termed as nitrogen fixation. There are free living and symbiotic microorganisms that fix nitrogen into proteins. The nitrogen fixing micro-organisms are termed as diazotrophs.

ii) Ammonification:

Ammonification is a procedure in which organic nitrogen is transformed into ammonia. The amino acids are employed as nutrients by micro-organisms. Under aerobic circumstances, the amino groups are eliminated from amino acids with the discharge of ammonia.

iii) Nitrification:

It is a procedure in which ammonia is oxidized into nitrate. The procedure comprises of two steps. In the primary step, ammonia is oxidized into nitrite. This is termed as nitrosofication.

2NH3 + 3O2 → 2HNO2 + 2H2O

The oxidation reaction gives energy and this is taken out in the bacterial genera Nitrosomonas and Nitrosococcus. In the second step, the nitrite is oxidized into nitrate

2HNO2 + O2 → 2HNO3

This oxidation also gives energy and this is taken out in the bacterial genus Nitrobacter.

569_notrogen cycle.jpg


 
                         Figure: The Nitrogen cycle

iv) Denitrification:

Denitrification is a procedure in which nitrates are reduced to nitrites and afterward to gaseous nitrogen.

NO3 → NO2 → N2O → N2

In denitrification, organic compounds serve up as hydrogen donors and nitrate serves as an electron acceptor. Denitrification takes place under anaerobic conditions example, during seasonal flooding on the land.  It is taken out under the influence of bacterial genera such as Thiobacillus denitrificans, Micrococcus dentrification & Clostridium sp.

 

Latest technology based Biology Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Food Microbiology help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Food Microbiology, project ideas and tutorials. We provide email based Food Microbiology help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Food Microbiology. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Microbiology Homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Food Microbiology. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Home | Company Overview | Services | Discover Q&A | Sitemap | Contact Us | T & C | Refund Policy | Copyright Policy | Blog | Q&A | Directory

©TutorsGlobe All rights reserved 2022-2023.