FIGURE 11.12 Pigments of Pseudomonas Species Cultures of different strains of Pseudomonas aeruginosa. Note the different colors of the water-soluble pigments.
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Why is the fact that Pseudomonas species can grow in nutrient-poor
environments medically important?
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- Escherichia coli Mycobacterium phlei Bacillus Micrococcus subtilis luteus A B Figure 1: Agar Slant Cultures of Bacteria (Gary E. Kaiser, Ph.D.- Professor of Microbiology) . Observe and describe the colour of the slant cultures (A-D) in fig 1. ( . Define the following terms: pure culture, sterile medium, inoculum, aseptic technique, and colony. What is the name of the cultures that you used . Where they gram negative or positive Define the following terms: psychrophile, mesophile, thermophile, and hyperthermophile.Special Media for Isolating Bacteria OBJECTIVES Because multiple methods and multiple media exist, you must be able to match the correct procedure to the desired microbe. For example, if bacterium B is salt-tolerant, a high concentration (>5%) of salt could be added to the culture medium. Physical conditions can also be used to select for a bacterium. If bacteri- After completing this exercise, you should be able to: 1. Differentiate selective from differential media. 2. Provide an application for enrichment and selec- tive media. um B is heat-resistant, the specimen could be heated before isolation. Dyes such as phenol red, eosin, or methylene blue are sometimes ineluded in differential BACKGROUND media. Products of bacterial metabolism can react with One of the major limitations of dilution techniques used to isolate bacteria is that organisms present in limited amounts may be diluted out on plates filled with dominant bacteria. For example, if the culture to be isolated has 1…Why is washing with Hank’s balanced salt solution with 0.5% antibiotic-antimycotic done for Splenocyte Preparation?
- Changes in the bacterial genome can lead to resistance to antimicrobialdrugs. what the different ways that these changes in the DNA occur?Explain why the media where the Staphylococcus aureus is plated has turned yellow but the media where Staphyloccocus epidermidis plated is still pink? The media used would be the Mannitol Salt Agar Medium.prior to this study, why did researchers never notice that B. anthracis can make both an S-layer and a capsule simultaneously? I need help finding the answer in the article and explan in the shortest way please i linked the url for the full article https://www.ncbi.nlm.nih.gov/pmc/articles/PMC106848/
- What would happen if an ampicillin reagent is added to an Lysogeny broth agar plate that is below 50 degrees Celsius. What would happen if it was added to an Lysogeny broth agar plate that is 50-55 degrees Celsius? Please draw two plates to demonstrate.Why is Salmonella typhi a gram negative bacilli? Explain.Characterize and give a brief description of the following bacteria: Pseudomonas Salmonella typhi
- Describe the appearance of an S. agalactiae colony grown on blood agar. Describe how that colony would differ in appearance from a colony of S. pyogenes.A 9 year old boy with cystic fibrosis – a genetic disease that causes a number of problems, including the build-up of thick sticky mucus in the lungs- complained of increasing fatigue, shortness of breath and worsening cough. When his mother took him to the doctor, she mentioned that his cough was a blue green color. His doctor immediately suspected a lung infection by Pseudomonas aeruginosa a common complication of cystic fibrosis. A sputum was collected and sent to the clinical laboratory. In the Clinical laboratory, the sample was plated onto Mac Conkey agar and blood gar and incubated. Mucoid colonies surrounded by bluish green color grew on both types of agar media. The colonies on Mac Conkey had no pink coloration, so the medical technologist concluded that the cells did not ferment lactose. She noted that the blue green color on the agar plates and in the sputum, knowing that P.aeruginosa makes several pigmented compounds that give rise to colors ranging from yellow to blue. One…Pseudomonas Aerogenosa has the ability to use pilus as a motility structure How does Pseudomonas aerogenosa contribute to the virulance of the pathogen?