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Define Principle of fehling test - reduction tests?
Sugars that possess a free or potentially free (those that can be converted to free) aldehyde or ketonic group have a property of easily reducing metal ions such as copper, iron, mercury, bismuth etc. The alkali from Fehling's reagent acts on sugar molecules and converts them to enediols. These enediols are unstable and highly reactive and thus reduce cupric ions to cuprous ions. These cuprous ions combine with the hydroxyl ions to form cuprous hydroxide, which, on heating, forms a red precipitate of cuprous oxide.
In what ways can modern agriculture threaten the survival of species? Modern agriculture destroys the natural vegetation (e.g. woodland, hedgerows) on a site, which means a nat
Q. Urine Examination of the diabetes Patient? Generally when blood testing facilities are not available, urine is tested for the presence of sugar. A urine sample shows presenc
What is circulation? Circulation is the movement of substances as nutrients and gases within blood vessels and cavities all by the organism.
Q. Concerning the maintenance of body temperature how do beings of the class Reptilia classify? Like amphibians and fishes, beings of the class Reptilia are heterothermic anima
What is mechanical digestion? In molluscs, arthropods, earthworms, birds and vertebrates, in general, which organs respectively participate in this type of digestion? Mechanica
Q. Explain about Spring Model ? The spring model depicts elasticity. A force is applied in terms of load onto the spring as illustrated in the figure 8.6. When the force is app
Non-nucleoside reverse transcriptase inhibitors (NNRTIs) - These drugs are direct, non-nucleoside inhibitors of HIV-1 reverse transcriptase. Combinations of an NNRTI with NRTIs
Q. Physiological Characteristics of molds? The physiological characteristics of molds will be reviewed only briefly here and will be discussed in more detail subsequently. Mois
Define Reduction of blood lipids? This effect have been especially observed with saponins. Diets containing saponin-rich foods (300-500 mg saponins/day) e.g. soya, alfalfa, chi
What the difference is between type I diabetes mellitus and type II diabetes mellitus? Type I diabetes, also called as juvenile diabetes, or insulin-dependent diabetes (this na
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