If 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.
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- The table below summarizes the results for Hopkins-Cole test. Provide the correct remarks from the results if Negative for Hopkin's Cole test or Positive for Hopkin's Cole test and if Negative for indole group or Has the presence of indole group.Answer the following questions (not more than 5 sentences/question). Discuss the correct laboratory technique in using the centrifuge for qualitative analysis. Give two tips on its proper use. Explain how calcium ions are confirmed present in a solid salt by using flame test. Discuss a method to confirm the presence of a) phenol and b) ketone in a test compound. How are proteins confirmed present in a sample? Explain the laboratory process.Create a flow chart to perform the required tests to identify unknown microorganism: - Use at least 3 other biochemical tests from the following list: Mannitol salt agar, Blood agar, Starch agar, Tributyrin Agar, Gelatin, Casein agar, Indole Production, MR-VP, Citrate, Hydrogen Sulfide test, Urease test, Nitrate reduction test, Catalase test, and Oxidase test. The Gram positive organisms that could be present in your unknown mixture are: Bacillus cereus, Micrococcus luteus, Staphylococcus aureus, Staphylococcus epidermidis and Lactococcus lactis.
- Discuss the correct laboratory technique in using the centrifuge for qualitative analysis. Give two tips on its proper use. Explain how calcium ions are confirmed present in a solid salt by using flame test. Discuss a method to confirm the presence of a) phenol and b) ketone in a test compound. How are proteins confirmed present in a sample? Explain the laboratory process.What does translucent spot mean with regards to lipid? Identify the control for this test. 1. Oil 2. Cheese 3. Water 4. Cheesehttps://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)
- GIVE A DETAILED AND COMPLETE DESCRIPTION FOR THE FOLLOWING: 1. What are the culture media used in the following tests? — indole production test (indole production from tryptophan) — lysine decarboxylase test 2. What are the expected results in the following tests? — indole production test (indole production from tryptophan) — lysine decarboxylase testBetween Proteus mirabilis and Proteus vulgaris which are positive or negative for ornithine decarboxylase test results?Salmonella-Shigella (SS) agar plate results (kitchen sink drain and kitchen dish cloth) Using the following information about SS agar and the image below, describe and identify the growth on the SS agar plate in the table on page 6. SS agar plate - results of kitchen sink drain and kitchen dish cloth (plate below) Salmonella-Shigella (SS) agar: Salmonella-Shigella agar (SS agar) is a selective and differential medium utilized for the selection and characterization pathogenic enteric bacteria. SS agar contains lactose, bile salts, ferric citrate, and neutral red. Kitchen The bile salts select for Gram-negative bacteria, while inhibiting Gram-positive bacteria. sink drain The other components differentiate among Gram-negative bacteria. Coliform bacteria such as E. coli will ferment the lactose in the media, resulting in bacterial growth with a pink color. (They do not produce any hydrogen sulfide.) Members of the genus Salmonella will not ferment lactose, but do product hydrogen sulfide…
- Why does the oxidase test must be performed from blood agar or another medium without a fermentable sugar as MacConkey agar?For which of the five hydrolysis tests (starch, casein, triglycerides, tryptophan, and urea) would a positive test result be expected for: a. the etiologic agent of acne, Propionibacterium acnes? Explain. b. the etiologic agent of gastric ulcers, Helicobacter pylori? Why would this activity be advantageous in this environment?Name the reagent test for amino acids and proteins