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Define Ion exchange chromatography?
In this method a reversible exchange of ions is effected. Usually resins and ionic solutes are the two components involved in ion-exchange. Ion exchange resins are of two types cation and anion exchange resins. The acidic or cation exchange resins contain sulfonic acid groups (SO3H), carboxylic groups (COOH) or phenol groups (OH).
Basic or anion exchange resins contain weakly basic amine groups (NH2) or strongly basic quarternary ammonium groups (NH4)+ OH-. The surfaces of acid resins bind cations such as H, Na+, Ca2+, NH4+. The basic or anion exchange resins carry positive charges on the surface and thus adsorb negative ions.
Pluripotent SCs : Characterizing more restricted abilities for differentiation.their sources are some celles blastocyst (5-14 days) embroys, so can from over 200 cells types i.e
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P r o d u c t Quality Assurance Meat products should be manufactured under strict hygiene and sanitary conditions to avoid public health risks and improve aesthetic appea
THE DENVER DEVELOPMENT SCREENING TEST (DDST) The Denver Development Screening Test is a standardized test to assess gross motor, fine motor, language and social development
what are the physical requirements to become a zoologist?
Salinity - Marine Ecosystems Physico-chemical factors - Salinity The sea is salty and its salinity is fairly constant, averaging about 3.5 per cent usually written as
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Explain the Heat Fixation Method? This is the usual method. Here, bacteria is fixed by gentle heating of air-dried bacterial film, which results in coagulation of bacterial pro
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