Q. 16

Write any two bio

Answer :

Two diagnostic procedures are –

•Target Amplification Technique


•PCR ( nucleic acid amplification test)


PRINCIPLE OF PCR


•Amplify ( multiply) a specific nucleic acid sequence,exponentially producing billions of copies


OR


Secondary treatment is a process for wastewater( sewage) to separate and achieve the better quality as much as possible


•It removes around 85% of the organic matter in sewage (by using bacteria in it )


•Principal – the trickling filter and the activated charcoal


•This can be done in three ways –


•BIOFILTRATION - this involves sand filters , contact filters , or trickling filters to remove the additional sediment


Trickling filters are the most effective


•AERATION – it involves the mixing water waste with a solution of micro organism


It is a long (aerated for upto 30 hours) and effective process


•OXIDATION PONDS – it involves the natural water bodies such as lagoons


Water waste is passed through this body for a period of time and then retained for 2-3 weeks



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