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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.
Determine the term - Leuconoid sponge. The most complex of the three different sponge architectures. Choanocytes are found in chambers, and there is not any spongocoel. Water e
OESOPHAGU S - Gullet opens in oesophagus. First organ of alimentary canal. After piercing diaphragm, it form stomach in abdominal cavity. No digestion in it. Food mov
Q. Nutritional management for diarrhoea? The conservative concept of treatment for diarrhoea was not in favour of feeding adequate amount of food. However, with the identificat
Respiration Robert Boyel and Robert Hook first of all explained the meaning of respiration. Main aim of respiration is to liberate energy in the form of A.T.P. Oxidati
how energy enters and then flows through a biologial system?
Minerals : Bromine Food Source Brominated flour Nutritional Functional role Not known to be essential to humans. Dough improver: KBrO 3 impr
What is the heterotrophic hypothesis on the origin of life? As per to the heterotrophic hypothesis the first living beings were very simple heterotrophic organisms that is not
What factors influence whether a person will develop cancer? Factors contain the person's age, number of exposures to carcinogens, amount of carcinogen in every exposure, and p
Phanerophytes - Classes of Life Form The perennating buds in this case are present on erect, negatively geotropic shoots, much above the ground. These buds are naked or least
In humans, starch digestion begins in the buccal cavity, but stops in the stomach .Why?
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