Nitrogen Cycle

biology project and need the explanation and answer to help me learn.

Nitrogen is an important component of many biomolecules,like proteins and nucleic acids (DNA and RNA).Atmosphere is the reservior of free gaseous nitrogen.Living organisms cannot pickup thie gasous nitrogen directly from atmosphere (expect for nitrogen fixing bacteria).It has to be converted into nitrates to be utilised by plants.Nitrogen cycling involves several stages;a-Formate of Nitrates;
It is done by the following ways;1….Conversation of nitrogen gas into nitrates is called nitrogen fixation.it occurs in the Following ways;…1…thunderstorms and lightning convert atmospheric gaseous nitrogen to oxides of nitrogen.These oxides dissolve in water and form nitrous and nitric acid.The acid in turn combine with other salts to produce ‘nitrates’.It is called as atmospheric nitrogen fixation.2…some bacteria also have the ability to transform gaseous nitrogen into nitrates.It is called biological nitrogen fixation..some of these nitrogen fixing bacteria live as symbionts and many are free-living.3….Nitrogen fixation is also done in industries.In industeries nitrogen fixation,hydrogen is combined with atmospheric nitrogen under high pressure and tempreture.It produces ammonia which is further converted into ammonium nitrates…ii….Ammonification and nitrification….Ammonification is the breakdown of the proteins of dead organisms and nitrogenous wastes (urea,uric and acid etc)to ammonia.it is done by ammonifying bacteria.After the formation of ammonia,it is converted to nitrites and nitrates.it is called nitrification and is done by nitrifying bacteria.First,ammonia is converted into nitrates by bacteria(e.g Nitrosomonas).The nitrites are ten converted into nitrates by other bacteria (e.g Nitrobacteria)..iii…Assimilation….The nitrates formed by the above processess,are absorbed by plants and are utilized for making proteins etc.Animal take nitrogenous compounds from plants.The utilization of nitrates by organisms is called Assimmilation..iiiv….Denitrification…It is a biological process in which nitrates and nitrites are reduced to nitrogen gas by denitrifying bacteria.By this process,nitrogen is returned to atmosphere
Requirements:

The post Nitrogen Cycle first appeared on Bessays.