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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.
Define about Iodine Metabolism? Now, we will very briefly study how iodine is absorbed, distributed in the body and ' excreted out. Like other nutrients, dietary iodide is eith
Q. Which are the glands present in the epidermis of birds, reptiles and mammals? In the epidermis of reptiles and birds there are practically no glands. In mammals there are se
Stability studies are req. for the product stable at their desire time as per specification , which give the expiry date and quality as per the manner.
The agouti locus in mice has three alleles: A is recessive and confers a black coat, A is dominant to a and confers an agouti coat, and AY is dominant to both and confers a yellow
Polysaccharides are vast chains of sugar units joined together. The chains should be branched or linear depending on the polysaccharide. In animals, excess glucose is stored as
Q. What is the difference between fat-soluble and water-soluble vitamins? Why can fat-soluble vitamins cause harm when ingested in excess? Water-soluble vitamins are those vita
Explain The nutritional care process The nutritional care process is a systematic and logical approach to ensure effective and successful nutrition and intervention. The Ame
Coelom - Metazoa True coelom is a body cavity which arises within the embryonic mesoderm so that the cavity lies between the body wall (integument; ectoderm) and guts (endoder
The overall goal of BCC programs for diabetes mellitus is to promote behaviors that control diabetes mellitus and prevent complications. These include: Following treatment
Define about the Ishihara's Plates of eyes Ishihara's Plates: Following plates are available- Transformation, Vanishing, Hidden Digit and Diagnostic plates. 1) The plates ar
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