the first step in the test for a lipid is to add ethanol and propanone .what do this step do?
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Q: What carbohydrate is generally detected using the Molisch test? *
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Q: What test could be used to differentiate between glucose and starch? Explain
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Q: Benedict's test. What determined whether the carbohydrate reacted or not
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Q: Why do animal fats and vegetable oils become rancid when exposed to moist warm air?
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Q: What test is used to differentiate glucose and galactose? Explain the answer
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Q: In solubility test, why do we need to put the lipid samples in a direct heat after adding ethanol?
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Q: What is a positive result for Osazone test Carbohydrates?
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Q: Will disaccharides and polysaccharides give a positive result for Molisch test?
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Q: Will all carbohydrates gives a positive result with Molisch test? Explain your answer:
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Q: What is the detection principle of iodine test for starch
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Q: The hydrolysis of starch was stopped when the iodine test no longer gave a blue color. Does this…
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Q: Does a positive result will occur on a Molisch's Test when trying disaccharides or polysaccharides?
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Q: List at least three test reactions for lipids. Describe its principle and its positive result
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- Name at least three test reactions for lipids. Briefly explain the the principle of each test and describe its positive result.Can the iodine test distinguish between amylose and amylopectin? What would you look for?The following were obtained when testing for lipids. Discuss and conclude from the results obtained.
- Give and explain the principles of the following tests for lipids: Spot Test Acrolein Test Test for Free glycerol Test for Surface Tension Formation of Insoluble Soap Liebermann-Burchard Test Salkowski TestName: Report Sheet: Proteins (page 4) Would the Ninhydrin test be reliable in determining the presence of proteins? Explain. Will any amino acid having an aromatic ring give positive Xanthoproteic test result under identical conditions? Why? Do most proteins give a positive Xanthoproteic test? Why or why not? For what chemical group is Millon's reagent a test? Write the formula and the name of the amino acid for which this reaction is a test. What chemical grouping is responsible for a positive Hopkin's-Cole Test? What element in the amino acid is detected to be present in the lead acetate test? 31 | BiochemistryWhy do we need to place the lipid samples under direct heat after adding ethanol in a solubility test?
- Polysaccharides generally do not give a positive test with Fehling’s solution. Why? *An unknown solution contains a single pure sugar. It gives positive results to Molisch’s and Benedict’s tests but is negative for all others. What is the sugar? Is it sucrose, lactose, or xylose? Explain your choice.Why does glucose not give positive results with an iodine test but not starch?