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Explain concept of Salting out
Salting out: Proteins in aqueous medium can be precipitated by qdding, trichloroacetic acid (TCA) or perchloric acid (PCA). Salts of heavy metals, phosphomolybdic acid or phosphotungstic acid are commonly used for protein precipitation. This is known as salting out. Concentrated solutions of neutral mineral salts such as MgS04, Na2S04 and (N&)2S04 are also commonly used for precipitation of proteins.
What is the significance of soil colour Soil colour is significant in soil classification, i.e. the characterisation of soil, interpreting soil properties and understanding so
HYGIENE : We all would agree that chemical hazards can be prevented to a certain extent by maintaining a good hygiene. Hygiene in this context can be discussed in the following th
Why are peaty and marshy soils highly acidic? The acidity is due to decomposition of organic matter under anaerobic conditions and formation of sulphuric acid.
Explain the Colour Blindness Normal individuals possess three cone pigments viz. red, green and blue which are referred to as tri-chromates. Colour blindness refers to the part
Evidence Favouring the Big Bang One piece of evidence comes from the expansion of the universe which we have already described. The expanding universe suggests that the matt
Explain Precipitation - Antigen-Antibody Interaction If Ag-Ab are present in an appropriate ratio, they form a precipitate in blood. Turbidity is developed, this can be measure
Explain the Emergency Contraceptive Pill (ECP) method The ECP method or "morning after pill" uses a high dose of combined oral contraceptives (OCs) to prevent conception. The O
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Science in the post-renaissance period (1540- 1760): We have seen above that improved techniques as well as growing trade had led to great voyages to many lands. These were
A balance barometer This device depends on the fact that dry air is heavier than moist air at the similar temperature. Two equal cylinders (tin cans would do) are mounted, o
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