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What is Barfoed's test and its principle?
This test is a specific test for monosaccharides.
Principle
This test is also a copper reduction test but differs from Fehling's and Benedict's test in the medium of reduction. The reduction takes place in acidic medium and unlike Benedict's and Fehling's test where we learnt that reduction takes place in alkaline medium. Only strong reducing agents can reduce cupric ions in acidic medium and since monosaccharides are strong reducing agents, they give this test.
Even though association between GAS pharyngitis and the ARF is fairly well established, the exact pathogenic mechanisms are not clearly understood. However, two mechanisms are post
Which statement best describes the acid/base properties of guanine? -at pH, guanine will be negatively charge -at pH, guanine will be neutral -it will be an effective buff
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B l ac k q u ar t e r The disease is otherwise known as black leg or emphysematous gangrene, and it is associated with severe toxaemia, emphysematous swelling of muscl
what is cell?
Question 1 Write a short note on the following- Theory of clonal selection Interferons Super antigens Helper T cells Auto immunity Active Immunization
Nucleic Acids Friedrich Miescher (1868) discovered the presence of these compound in protoplasm ,but Altman (1889) introduced the term Nucleic acid. These acids are the lar
physiology of skin
definition of xerophytes
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