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Define Principle for Simple Staining of Bacterial Cultures?
In simple staining, a single staining agent preferably a basic dye is used. Commonly used basic stains are carbol fuchsin, crystal violet and methylene blue. Different exposure times are used for different dyes, e.g. for carbol fuchsin 15-30 seconds, crystal violet 20-60 seconds and methylene blue 1-2 minutes. Being positively charged, these binds strongly to bacterial cells, which have negative charge on their cell surface. Simple staining gives idea regarding size, shape and arrangement of cells. Its value lies in its simplicity and ease of use.
What is meant by the law of use and disuse and by the law of the transmission of acquired characteristics? As per to the law of use and disuse the characteristics of a body var
Eyes We have a pair of eyes. They are held in socket of the skull by four rectus muscles and two oblique muscles. These muscles control the movements of the eyes. The wall of t
What is biotechnology? The Biotechnology is the application of biological knowledge to obtain new techniques, materials and compounds of pharmaceutical, medical, agrarian, indu
Explain the Analysis of food production? The agricultural sector is known for its diversity and heterogeneity of decisions right from the farm to the entire marketing system. A
State the Designations for Horizons Of the several horizons, the master horizons are the results of the fundamental soil forming processes, viz. humification, eluviation and
A carbohydrate is composed of carbon (carbo-), and hydrogen and oxygen (-hydrate). The easiest carbohydrates are the monosaccharides that have the common formula (C
Transport in Phloem The basic necessities of plants, water, are taken up by the roots. Another purpose served by the roots is to absorb water soluble mineral nutrients from th
Cleft grafting The stem of the stock is cut across. A 'V' shaped insertion is made at the end of the stock. The scion is cut in shape. The scion is inserted into the 'V'
N e wcastle disease / Ranikhet disease (ND/RD) This disease is caused by Newcastle disease virus (NDV) belonging to the genus Paramyxovirus of the family Paramyxoviridae. Alo
Which statement below about asexual reproduction is FALSE? a.With asexual reproduction, offspring are genetically identical to the parent. b.Asexual reproduction requires no
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