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Explain the Confirmed Test - Most Probable Number Test?
Confirmed test is carried out to rule out the possibility of any positive presumptive test because of the presence of noncoliform organisms which are not recognized as indicators of faecal pollution. The test is performed by streaking on selective and differential media, i.e., EMB agar and Endo agar from positive lactose broth tube in presumptive test.
EMB contains lactose and dyes eosin and methylene blue. Methylene blue inhibits the growth of Gram positive bacteria. Lactose fermenters produce acid which results in the precipitation of dyes on to coliform colonies producing dark coloured center and a green metallic sheen. These results are characteristics of E.coli, the major indicator of faecal pollution. Enterobacter aerogenes produce pink and mucoidal colonies while nonlactose fermenters produce colourless, transparent colonies. Endo agar is a nutrient medium containing dye fuchsin in decolourized state which produce a pink complex in presence of acid produced by coliforms resulting in pink colonies of E. coli.
Explain the Applications of vitamin B 12 Cyanocobalamin is used in the preparation of liquid and dry drug formulations of all kinds. In the animal feed industry, usually co
Q. What amount of catalyst is obsessive in the reaction it catalyzes? Catalysts are not obsessive in the reactions they catalyze.
Oxygen is a major component of all living organisms. All the organisms and plants required oxygen for aerobic respiration which they absorb from environment. Only plants release ox
Sporadic exertional rhabdomyolysis (azoturia, tying up in horses) Azoturia is a metabolic condition of horses that is characterized by reluctance to move and poor performance.
Retention of water by the kidneys is regulated by a part of the brain, called the hypothalamus, that controls the secretion of antidiuretic hormone (ADH).An increased secretion of
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what are the uses of computer in biotechnology ??? briefly explain any twenty
Sporogenous Tissue The primary sporogenous cells (PSCs) result after the periclinal division of the archesporial cells. The PSCs may undergo mitotic divisions and increase in
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Endocrine versus Neural Integration A question that surely comes across your mind is, "what is the need for two types of integrative mechanisms, the neural and the endocrine"
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