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Biological Nitrogen-Fixation
The process by which molecular nitrogen (N2) is reduced to ammonia (NH3) is called nitrogen-fixation (N2-fixation). This is the most important section of this unit and is fairly long. Here we first introduce you to the species capable of N2-fixation and describe the formation of nodules during symbiotic association.
Then we go through the reactions and-enzymes involved in the conversion of molecular nitrogen to NH3. A brief section on the genetics of N2-fixation will introduce you to the possibility of transferring, N2-fixing capability to non N2-fixers.
Most of them happen on mucous membrane. Allergens enter the body by the process of inhalation or ingestion.
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