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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.
Diagram of a cell surface membrane. State the width of a cell surface membrane. (i) On which side of the membrane, shown in Figure, X or Y, is the cytoplasm of the cell?
What is Phylum Platyhelminthes - Flatworms ? This Class consists of the free-living flatworms, the best known of which is the Genus Planaria. Most of the species in this class
OVARIES - 2 in number (didelphic). White / pinkish. Almond like. 3 cm long, 2 cm wide, 1 cm thick. Lie in the lower part of abdomen attached to dorsal wall by mesovarium.
Q. Process of stabilize lipoprotein structure? Ans. Apoproteins not only stabilize lipoprotein structure but also have other important regulatory functions in lipoprotein
wich variables are controlled when conducting a phototropism experiment
extensive note on the excretory system of amphibian
Define Iron requirements of school children and adolescents? The iron requirements are also computed by factorial method and should therefore add iron requirement of maintenanc
Phylum Zygomycetes 1) Asexual reproduction by non-motile spores produced from a stalked spore case which is known as sporangium. 2) They reproduced by- conjugation between n
Define Assessment of Selenium Status? Blood glutathione (GSH) peroxidase activity is directly related to blood selenium up to a level of 1.27 μmoles/L. Beyond this point, the a
Amylase The presence of pancreatic amylase brings about the breakdown of starch and glycogen and its action is similar to salivary amylase. The hydrolysis of starch and gl
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