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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.
Coxal Glands There is a pair of coxal glands, in almost all the segments in Onychophora (Peripatus). Developmentally; in every segment a hollow follicle or somite arises and i
Competence of Larval Tissue or Multiple Responses The responsiveness of different larval tissues to thyroxine is markedly different. The tissues of the tail becomes necrotic
the mass number is used to calculate the number of _________in one atom of an elemement. In order to calculate the number of neutrons you must subtract the _______from the ______.
Explain about the barrier function of epithelium and endothelium in corneal hydration. Barrier Function of Epithelium and Endothelium: Epithelium offers twice the resista
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A field trip to observe flowers:- Plan a field trip to view flowers in bloom. If no interesting wildflowers can be found growing near the school, the trip can be planned to a p
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What is the role of Stomach in human body? The stomach serves both to digest food and to hold it so that it can be gradually released into the small intestine. Food stays in th
excretory organs in spiders?
Describe Infectious Agents ? Recently there has been increasing interest in the relation between chronic low grade systemic inflammation and mortality of coronary artery diseas
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