A carbohydrate sample reacts positively with all test reagents except for Lugol's. The sample could possibly be?
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- https://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Molish test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test. (not a graded question, the video is very brief) (please take time to answer)Based on this video https://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Fehling’s test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test. (not a graded question, video is very brief)Based on this video https://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Benedict ’s test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test. (this is not a graded question)
- Bial’s Orcinol Test Reagent’s Composition Observations: Test Sample Observations Water Glucose Fructose Arabinose Inferences: What is the principle behind this test? What kind of sugars will give a positive result to this test?A carbohydrate sample reacts positively with all test reagents except for Lugol's. The sample could possibly be?https://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Seliwanoff’s test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test. (not a graded question, video is very brief)
- Which of the following statements best describe testing of lactose sample?* A. Lactose will quickly (less than 3 minutes) form a thin brick red precipitate in a Barfoed's test since it is a reducing monosaccharide. B. Lactose will give positive test using phenylhydrazine test and forms a needle shaped osazone C. Lactose when reacted with nitric acid and exposing to cold water bath will form insoluble white crystals. D. Lactose when tested using Seliwanoff's test will form a red colored complex.Our laboratory has a stock of 50 X TAE (Tris-Acetate) and the laboratory manager asks you to prepare a 2% gel using 1XTAE that you will prepare from agarose and stock. How do you prepare? (tank tray volume 250 ml).Cyanogen bromide is a common sulfhydryl-modifying reagent that can generally be used to break disulfide bonds. True False
- Based on this video https://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Molish ’s test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test.COLOR REACTION OF PROTEINS Question Guide: 1. Write the positive result, the chemical group responsible for the positive and the importance of each test. Test Positive Result Chemical Group Biuret Ninhydrin Xanthoprotei Millon's Hopkins-Cole Lead Acetate Pauly Bromine Water SakaguchiMultiple choice (Refer to picture) Which of the statements is NOT TRUE about the sample in Salkowski test? * Lower layer becomes red with a green fluorescence A molecule of cholesterol reacts with sulfuric acid to yield bi-cholestadien There should be an excess sulfuric acid to convert bi-cholestadien to bisulfonic acid of bi-cholestadien. It is best to shake the solution for a more accurate result.