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Define Adsorption chromatography - Basic Separation Technique?
Adsorption is surface interaction and is by number of forces, between surface atoms of solids and molecules of external solute. Adsorption chromatography comprises of systems where active absorption occurs at the surface of the solid stationary medium, often alumina or silica gel. Competition for adsorptive sites occurs between the molecules of the mixture to be separated and the molecules of mobile phase, be it gas or liquid.
The speed of migration of a component will depend on its adsorptive affinity relative to the other species present. A number of attractive forces (Vander Waal forces, hydrogen bonding etc.) between the stationary phase and substances to be separated have been recognized and separation takes place due to differences in these adsorption forces.
Q. Why do ribosomes move along mRNA during translation? During translation the ribosome always exposes two mRNA codons to be translated by moving along the mRNA, when a peptide
Transfer RNA which is also known as tRNA is an adaptor molecule composed of RNA, classically 73 to 93 nucleotides in length, which serves as the physical link between the nucleotid
Palpation: Use the ball of one hand and move the hand from one side of the posterior thorax to other. Note presence of swelling, masses, muscle tone, fremitus and crepitation.
Explain what is Patent Ductus Arteriosus in details? Figure : Anatomical location of PDA Patent Ductus Arteriosus (PDA) may be an isolated defect or may co-exist with
Temperature - Aquatic Habitats The water temperature changes less rapidly than the temperature of air because water has a considerably higher specific heat than air, that is l
what is meant by thigmotropism?
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Neuropsychological screening of adults Normally, a neuropsychological examination explores in depth an individual's performance in a wide range of functional domains. There are
PECTIN It consists of methylated galacturonic acid, galactose & arabinose. It is also called plant cement becuase it binds layers of cell wall. It is a structural poly
Q. How is the respiratory system of beings of the phylum Annelida characterized? Respiration in annelids can be branchial or cutaneous. Cutaneous respiration takes place due to
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