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- 1. what sugar causes the same color reactions with the test for pentoses? why? 2. what other substances interfere with the indican reactions? 3. Why should the specimen be albumin free when performing the chloride test for urine?1. Conclude regarding the chemical composition of the formation of film in fresh milk in biuret test and acrolein test.1. a 1 mL stock sample is added to 9 mL Of diluent to make solution A, and then 2 mL of solution A is added to 18 mL of diluent to make solution B. what is the final dilution with respect to the stock? 2. in most probably number (MPN) testing what media is used for confirming test and what does a positive result looks like? 3. In Most probably number (MPN) testing what can be inferred from a positive result on the presumtive test?
- 1. Please discuss how the Methyl Red-Vogues Proskauer test help distinguish microbes from each other.2. While conducting the Hydrogen Sulfide Test (SIM Agar) you open up one of the tubes and it gives off a rotten egg smell while another tube you cultured does not. What does the smell indicate? How come there was no change in color in the tube that indicated a positive test? Please explain how the color change is to occur. Think critically.1) would you describe the contents of the soil-inoculated broth as being a “pure culture”? Why or why not? 2) How did the uninoculated broth differ in appearance from the broths inoculated with E. Coli and M. Luteus? And then how could you tell if a supposedly sterile, uninoculated broth was contaminated? Please explain in detail and highlight the important parts cuz I am confused and need help! Thanks
- Hi. Based on the table i need to answer the questions. The table doesnt need to be filled. Tube Solution Reaccion of color Benedict Reaccion of color mud x x x x x x x x x x x x x x x x x x x x x x x x 7 10 drops of starch solution blue Ambar 4. In the starch iodine test, which solution is a negative control? Positive? B. Use the following table to answer the questions related to the Biuret protein test (5 - 7): Tube Solution Reaccion of color 1 2 mL egg albumin Violet 2 2 mL honey blue 3 2 mL solution of amino acid Violet 4 2 mL destilled water blue 5 2 mL solution of protein Violet 5. In the Biuret test, which of the solutions is a negative control? Positive?6. Which contains more protein (C-N bonds): egg albumin or honey? Explain. 7. Do free amino acids have peptide bonds? C. Answer the following questions: 8. Why does the methylene blue dye stain the nuclei in onion cells? 9. What is…1. What volume of sterile water for injection (diluent) must be added to reconstitue the powder? 2. How many mL of the reconstituted cefazolin is needed to prepare the final product?1. What is the most common sterilization technique used in laboratories? 2. List at least 5 procedures of the aseptic technique and describe its uses. 3. Why is Gram stain one of the most important and widely used stains in bacteriology? 4. Explain the Gram staining technique in chronological order. Indicate the reagent used and the time of usage on each reagent.
- 3- The ___________ color test reagent turns orange-brownin the presence of amphetamines.!1. Which of the pairs of amino acids gives a positive result to Xanthoproteic test?* Tyrosine and tryptophan Tyrosine and glycine Tryptophan and cysteine Glycine and cysteine 2. Which of the following statements best explains the heterogeneity of the mixture of egg yolk, hexane and Sudan solution?* Egg yolk contains proteins and lipids which are insoluble in hexane and Sudan solution Egg yolk contains lipids which are insoluble in hexane and Sudan solution. Egg yolk contains proteins which are insoluble in hexane and Sudan solution. None of the choicesIIB. ACROLEIN TEST The table below summarizes the results for acrolein test. Provide the correct inference for the given result. (PUT A CHECK) Positive for glycerol Negative for glycerol A B C D