Nitrogen fixation, Biology

Assignment Help:

Nitrogen Fixation

Nitrogen is an essential constituent of living organisms and there is an inexhaustible supply of it in the atmosphere in the free form. Majority of living organisms including humans are incapable of utilising gaseous nitrogen but need organic nitrogen for their nutrition. It is for this reason that the nitrogen fixation or availability of organic nitrogen is critical for the living organisms. Free nitrogen is inert but certain groups of specialised organisms have the ability to utilise gaseous nitrogen fmn the atmosphere. The reduction of gaseous nitrogen or its conversion to organic nitrogen is called nitrogen fixation. The fixed nitrogen is readily utilised by other organems. Incorporation of atmospheric nitrogen into nitrogen compounds by nitrogen fixers such as Azotobacter in aerated soils; Clostridium in unaerated soils; Rhizobium in the nodules of legume roots and by a number of blue green algae such as Nostoc and Anabaena, is the most important step to ensure nitrogen supply for the living organisms. The quantum of biological nitrogen-fixation has direct effect on soil fertility.


Related Discussions:- Nitrogen fixation

What are the major theoretical models, Q. What are the major theoretical mo...

Q. What are the major theoretical models that try to explain the formation of the enzyme-substrate complex? There are two major models that explain the formation of the enzyme-

Illustrate the functioning of living systems, How are buffers significant t...

How are buffers significant to the functioning of living systems? By neutralizing small amounts of acid or base that might be added to a solution, buffers keep pH values at nor

Why does geographical isolation lead to speciation?, Why does geographical ...

Why does geographical isolation lead to speciation? The Geographical isolation between groups of the same species leads to formation of a new species since it disallows crossin

Respiration, Define respiration in animals

Define respiration in animals

Enumerate about the halstead- reitan battery, Enumerate about the Halstead-...

Enumerate about the Halstead- Reitan battery As in the case of the Halstead- Reitan battery, one could present two theoretical bases for the Luria- Nebraska, one revolving arou

Role of psychiatric nurse, ROLE OF PSYCHIATRIC NURSE: In Blocks 2 and ...

ROLE OF PSYCHIATRIC NURSE: In Blocks 2 and 3 you have learnt about various therapeutic interventions  for mental disorders  like anxiety neurotic disorders, psychotic disorder

Tolerance range, Maximum and minimum range of an animal with the factors of...

Maximum and minimum range of an animal with the factors of Ph Salinity Pressure Relative human

Which pathways produce atp via slp, How substrate-level phosphorylation (SL...

How substrate-level phosphorylation (SLP) differs from oxidative phosphorylation. Which pathways produce ATP via SLP? Where in cell oxidative phosphorylation (prokaryotes/eukaryote

Explain valacyclovir, Valacyclovir (Valtrex) - Valacyclovir is an L-val...

Valacyclovir (Valtrex) - Valacyclovir is an L-valyl ester of acyclovir that is metabolized to acyclovir after oral administration, resultingin higher serum concentrations than

3x samples collected in process validation, To get the idea on the process ...

To get the idea on the process capability that whether the intended process provides the consistent results or not(precision).

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd