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Pathogenicity
Infection and Transmission
The infections are generated by the pathogenic organisms present in the environment. They maintain the capacity to invade a host body and establish colonies. A disease caused by such infectious agents is called a communicable disease or transmissible disease. These diseases spread through diverse means including blood, food, water, air, or vectors.
What and give 1 successful case of genne theraphy, What are the drawbacks of this technology? Enumerate at least 2and briefly explain ypur answers.
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- Provide two advantages and two disadvantage of flow cytometry analysis. Briefly explain each.a. What is the total dilution of Tube #4? Express the answer in exponential format. b. You plated 1 mL of the Tube #4, After incubating, you counted 500 colonies on the plate. What is the concentration of Tube #0? include units. c. How could you change the experiment in part B to get a plate in the countable range? Be specific about any dilution factors and/or plated volumes you would change.Please give only a brief description 1. What is the use of nominal scale in providing the information about covid19? 2. What is the use of ordinal scale in providing the information about covid19? 3. What is the use of interval scale in providing the information about covid19? 4. What is the use of ratio scale in providing the information about covid19?
- 1. Following the modified protocol for the isolation of Escherichia coli bacteriophage of Encabo (2018) presented below, compute for the pfu/ml of the chloroform-treated lysate. 1ml 1ml 1ml 1ml 1ml | | ||| 9ml 9ml 9ml 9ml 9ml Chloroform-treated lysate 101 102 103 104 105 0.1 ml 0.1 ml_0.1 ml Empty sterile tubes ||| + 0.5 ml E. coli Incubate inside ref for 15-20min + 0.1 ml lysate-E.coli mix Molten soft agar overlay O00000 Bottom agar Number of plaque-forming units (pfu) Plate A Dilution Plate B 103 104 105 254 265 132 11 110 23 average number of plaques x dilution factor volume plated pfu mlDiscuss the principles and applications of Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry in molecular diagnostics.Briefly compare the following test systems, Micro-tox, ATP-Tox, and Daphnia magna IQ test . Explain how each assay works (the principle), not the test procedure.
- Topic: Isolation of Crude Ovalbumin from Egg White by Ammonium Sulfate Precipitation(Salting Out) The computed amount of powdered ammonium sulfate was added to the egg white sample portion byportion with constant stirring while submerged in an ice bath. The solution is expected to become moreturbid, and a white precipitate is expected to form. Explain the purpose of using powdered ammonium sulfate in the isolation of ovalbumin from egg whites.a) What are the important parameters for the eluent selection in Gel Permeation Chromotography (GPC)? Explain your answer in detail. What is an universal calibration curve and what is the advantage of using it in GPC analysis?Why rapid tests are not the gold standard in Covid19 detection. Explain.
- A phagehunter performs a spot titer using standard techniques (3 ul of each dilution spotted to lawn) of a lysate obtained from an optimum webbed plate experiment. The phagehunter counts 4 plaques on the 10-8 dilution spot. Which of the following scenarios is the best choice for the phagehunter to do next? a.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should try to make more optimum webbed plates. b.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should adopt a phage from direct isolation. c.) The phagehunter has achieved a high enough titer lysate to move forward with characterization experiments. d.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should go back to the pick-a-plaque experiment.A phagehunter performs a spot titer using standard techniques (3 ul of each dilution spotted to lawn) of a lysate obtained from an optimum webbed plate experiment. The phagehunter counts 8 plaques on the 10-7 dilution spot. Which of the following scenarios is the best choice for the phagehunter to do next? a.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should go back to the pick-a-plaque experiment. b.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should adopt a phage from direct isolation. c.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should try to make more optimum webbed plates. d.) The phagehunter has achieved a high enough titer lysate to move forward with characterization experiments.How are the Kato Katz Technique results reported?