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- INSTRUCTION: Check which test(s) will yield a positive result for the given compounds. Biuret Test Ninhydrin Test Hopkin’s Cole Test Xanthoproteic Test Millon’s Test Lead Sulfide Test Albumin Gelatin Casein Tyrosine Glycine Ala-Pro Cys-Leu His-Gly-Tyr Gly-Gly-Met Beef stockhttps://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)The reults for the macroscopic part: 0.30M glycerin – solution was translucent (could see text behind the test tube) 0.15M NaCl – solution was opaque (could not see text behind the test tube) 0.30M NaCl – solution was opaque (could not see text behind the test tube) 0.15M glucose – solution was translucent (could see text behind the test tube) 0.30M glucose – solution was opaque (could not see text behind the test tube) 0.30M Urea – solution was translucent (could see text behind the test tube) Results for microscopic part: 0.30M glycerin – no cells present 0.15M NaCl – normal sized cells 0.30M NaCl – crenated (shrunken and star-shaped) cells 0.15M glucose – no cells present 0.30M glucose – normal sized cells 0.30M Urea – no cells present Determine the osmolarity (hypoosmotic, isosmotic, or hyperosmotic) and tonicity (hypotonic, isotonic, hypertonic) of the following solutions.In which solutions did the osmolarity NOT match the tonicity? For those solutions, why did the osmolarity…
- BARFOED’S TEST FOR MONOSACCHARIDESPlace 1 mL (20 drops) of each 1% carbohydrates solution in separate test tubes. Prepare a control with 1 mL water. Add 4 mL Barfoed’s reagent. Place the test tubes in boiling water bath for 10 minutes. Remove the test tubes and cool in cold water. Record your observations. A precipitate of cuprous oxide which may be green to red, indicates that a monosaccharide is present. Record your result and conclusion. Identify the compounds that are monosaccharides. SELIWANOFF’S TEST FOR KETOHEXOSESPlace 5 drops of 2% carbohydrate solution in separate test tubes. Prepare a control with 5 drops water. Add 1 mL of Seliwanoff’s reagent to each test tubes and heat. Record your results. The rapid formation of a bright red indicates that a ketohexose is present. Identify the compounds that are ketohexoses. IODINE TESTS FOR POLYSACCHARIDESPlace 2 mL of each carbohydrate solution in separate test tubes. Prepare a control with 2 mL of water. Add 1 drop of iodine solution…Qualitative Analysis of Carbohydrates HELP Select the test: Place test tubes in waterbath Fehling's test A Fehling' solution Fehling's solution Reset Glucose Lactose Sucrose Starch Qualitative Analysis of Carbohydrates HELP Reducing sugars (glucose & lactose) reduce the deep blue solution of copper (II) in the test reagent to red precipitate of insoluble cuprous oxide. Select the test: Fehling's test ResetProcedure Catalase Fill each labelled test tube (A- H) approximately 3 ml with fresh hydrogen peroxide. Add a small amount of material to be tested. perform three trials of each sample at different temperature (100C,370C, 500C) Note whether or not bubbles are produced and the rate of reaction Sample Expected Result Actual Result Interpretation Boiled Liver Bubbles Positive Boiled Leaves Bubbles Negative
- Millon-Nasse Test Mix 1 mL of the sample and 5 drops of Millon-Nasse reagent. Boil the content gently for 30 seconds. Cool in water. Add 2 drops of freshly prepared 1% NaNO2 and warm gently. Observe the color of the precipitate and/or the solution. Question 1. Will all amino acids and proteins give a positive reaction to this test?Question 2. What causes the color of the solution or precipitate?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 SakaguchiResults and Discussion: Folin's McCarthy Sullivan Test: Samples: proline, methionine, alanine Reagents: sodium hydroxide (5N), Glycine (1%) and 10% sodium nitroprusside solution, 6N HCl -To 1 ml of the amino acid solution taken in a test tube, add few drops of sodium hydroxide (5N), followed by addition of few drops of glycine (1%) and 10% sodium nitroprusside solution (HANDLE WITH CARE)and vortex. Place the test tube in a hot water bath, maintained at 40 C, for 15 minutes. Cool the test tube in ice cold water for 5 minutes and add 0.5 ml of 6N HCl. Vortex the contents and allow to stant fpr 15 minutes at room temperature.
- option isoelectric focusinggel filtrationsalting outdifferential centrifugationEdman degradationion exchangedialysisthe docotor oreder oxacillin 650 mg every 6 hours the instructions on the 2 gram vial states to reconstitute with powder with 11.5mL of sterile water for injection, yuelding 220mg/1.5mL how many mL will you administerdescription of a the oxidase test