A positive lipid hydrolysis test is indicated by the growth of bacteria on the medium. A positive lipid hydrolysis test is indicated by the growth of bacteria on the medium. True False
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- An IV bag contains 250 mL of a 5% mannitol solution. How many grams of mannitol are in the IV bag?Given Test Reagent Positive or Negative Result Reason/Explanation Lime Soda Molisch Test Sucrose Fehling’s Test Fructose Tollen’s TestWhich ingredient is included in the motility test to make the results easier to see? bromthymol blue ferric citrate TTC phenol red
- Cyanogen bromide is a common sulfhydryl-modifying reagent that can generally be used to break disulfide bonds. True FalseAll recipes are given per litre unless specified. Lambda Broth (LB) Plates Top Agar 10 g tryptone 10 g Tryptone 2.5 g NaCl 2.5 g NaCl 15 g Agar 7 g Agar Make 5 mL aliquots, then autoclave. Lambda Broth (LB) Media Suspension Media 10 g tryptone 5.0 g NaCl 2.5 g NaCl 2 g MgSO4· 7H2O 50 ml 1 M Tris pH 7.5 In LB medium…All recipes are given per litre unless specified. Lambda Broth (LB) Plates Top Agar 10 g tryptone 10 g Tryptone 2.5 g NaCl 2.5 g NaCl 15 g Agar 7 g Agar Make 5 mL aliquots, then autoclave. Lambda Broth (LB) Media Suspension Media 10 g tryptone 5.0 g NaCl 2.5 g NaCl 2 g MgSO4· 7H2O 50 ml 1 M Tris pH 7.5 In LB medium…
- Positive or Given Test Reagent Result Reason/Explanation Negative Lime Soda Molisch Test Sucrose Fehling's Test Fructose Tollen's Test Ribose Bial's Orcinol Test Maltose Benedict's Test Milk Molisch Test Cellulose lodine TestAnswer the ff with not more than two sentences: Why should Erlenmeyer flasks hold not more than 60% of their capacity? When can gelatin be used in culture media preparation? How does cotton plug prevent contamination of the medium? Why should caps of glassware be loosened first before sterilization?The following are microbial products. Beside each product, identify the microorganisms producing it and briefly describe the function of the product. MSG yoghurt vinegar penicillin amylase glucose isomeraseg. proteases Taq polymerase Thermostable galactosidase thermostable DNA ligase
- The following are microbial products. Beside each product, identify the microorganisms producing it and briefly describe the function of the product. penicillin amylase glucose isomeraseg. proteases Taq polymerase Thermostable galactosidase thermostable DNA ligaseIf a sample is composed of a mixture of maltose, maltodextrin, and glucose, which of the following is expected? Adding alkaline CuSO4 to the solution will turn the solution into orange with some dark red precipitate. Performing Molisch Test on the sample will give a negative result. Reaction of the sample with phenylhydrazine will give a solution with yellow precipitate. Furthermore, inspection of the precipitate under the microscope will show cotton ball shaped crystals. . The Osazone Test on the sample will give a yellow solution with no visible precipitate.Which of the following can most likely increase the yield of recrystallized benzoic acid? CHOICES: A fluted filter paper was used during cold filtration. The receiving flask from hot filtration does not contain a small amount of solvent. Activated charcoal was not added to the solution. The solution was filtered immediately after hot filtration.