What Is Hopkins Cole Test? Hopkins Cole Test also referred to as glyoxylic acid reaction is one of the qualitative test methods to determine differences in types of proteins and amino acids. This test is used to identify the presence of the amino acid tryptophan in proteins; tryptophan is the only amino acid that has … Read more
What Is Sakaguchi Test? The Sakaguchi test is a chemical test that includes a colorimetric reaction for the identification and quantification of the amino acid arginine. Arginine is an amino acid that has a guanidine group in its side chain, which is the C atom that binds N2 with a single bond and binds N … Read more
What Is Millon’s Test? Millon’s test is an analytical test used for detection of presence of soluble proteins. Millon’s test is one of the qualitative methods to determine differences in types of proteins and amino acids, namely the type of phenolic amino or amino acids that have phenol groups such as tyrosine and it derivatives. … Read more
What Is Molisch’s Test? Molisch’s test is a sensitive chemical test, named after Austrian botanist Hans Molisch, used for the test of presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid or hydrochloric acid to produce an aldehyde, which condenses with two molecules of a phenol, resulting in violet ring. A … Read more
What Is Barfoed’s Test? Barfoed’s test is a biochemical test used to detect monosaccharide (reducing) sugars in solution. The technique was devised by a Swedish physician C. T. Barfoed (1815–1899). Barfoed’s reagent, a mixture of ethanoic (acetic) acid and copper(II) acetate, is added to the test solution and boiled. If any reducing sugars are present … Read more
In males, testosterone is responsible for many normal functions including growth and development of the genitals, muscles and bones. It also helps in normal sexual development (puberty) in boys. Testosterone levels in men can often decline steeply after the age of 50, leading to a condition referred to as andropause in which vigor and sexual … Read more
What Is Xanthoproteic test? Xanthoproteic test is a biochemical test for the detection of amino acids having benzene ring in them like phenylalanine, tyrosine and tryptophan (aromatic amino acids). In the Xanthoproteic reaction, the yellowish substance produced by heating protein with nitric acid is xanthoprotein, hence the name Xanthoproteic test. The test is a qualitative … Read more
Abiotic factors refer to non-living physical and chemical elements in the ecosystem that affect living organisms in terms of growth, maintenance, reproduction and distribution. They’re at times called abiotic components. Abiotic factors can be classified into five main types namely: climatic factors, topographical factors, edaphic factors, air and chemical elements. All these factors are discussed … Read more