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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.
Phytoflagellates – Protozoan Phytoflagellates are autotropbs that possess chlorophyll or other related pigments, and store food as fats, oils and starches (other than glycogen
Q. What are the poriferans? The phyla Porifera include the simplest creatures of the animal kingdom. Sponges are aquatic sessile beings they are not able to move by themselves
The terms ecosystem was introduction by Sir Arthur tensely in 1935. An ecosystem can be defined s " a structural and function unit of biosphere consisting of living organisms and t
Alertness and sleep are dependent on the activity of the brain as a whole, although different levels of consciousness are determined primarily by areas of the brain stem. A key ana
a) The image above is part of a DNA sequencing gel. Assuming this is the DNA coding strand and you are reading 5' -> 3' what are ALL the possible polypeptides this sequence cou
In yeast, a new mutation called suc was recently discovered. The suc mutant cannot use sucrose as a source of carbon, and will not grow if the culture medium contains only sucrose
Q. What is the difference between anaerobic and aerobic beings? Anaerobic organisms are those that live or can live under oxygen-lacking environments and Aerobic organisms are
Anther is the top of a stamen's filament; divided into pollen sacs in which the pollen grains are form.
There are several kinds of pollution, main among them are as follows:
scientific name of apple
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