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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.
Explain the Primary Stain - Ziehl-Neelsen Method? Ordinary aqueous stains like methylene blue, crystal violet, etc. are not able to stain most of the species of Mycobacteria. C
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Are protozoans diploblastic or triploblastic ?
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Explain the Process of Solubility test? This test is given by all monosaccharides and disaccharides. Polysaccharides are not soluble in cold water. Principle All monosa
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