Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram.
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Answer the following questions in complete sentences and paragraphs. Draw the diagram by hand:
- Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram.
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- Answer the following questions in complete sentences and paragraphs. Draw the diagram by hand: Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram. Explain the pathogenesis of Listeria monocytogenes. Be sure to include temperature regulation, intracellular growth, and at risk groups in your discussion.The large intestine contains bacteria, such as E.coli, that synthesize vitamin K and some B vitamins and absorbed into the bloodstream. Answer the following questions: 1. Describe the type of symbiosis best represented by E.coli and human large intestine. 2. When can E.coli become potentially pathogenic (disease-causing)? Explain briefly.4. Figure 1 (see next page) depicts the timeline of Sammy's chlamydia infection. Each panel of the figure represents a blood sample, showing a stain of the chlamydia bacteria. The red dots indicate the initial chlamydia bacteria, and the yellow dots indicate the mutated chlamydia bacteria. Provide detailed captions for the images under the titles, specifically indicating how the bacteria population changed over time. "The Fight Against Bacteria" by Jessie M. Garcia Page 3 NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE Figure 1a. Initial chlamydia infection. Figure 1b. Three days into the doxycycline treatment. Figure 1c. Sammy stops taking her antibiotic pills. Figure 1d. One week after the doxycycline treatment. Figure 1e. Two weeks after the doxycycline treatment.
- Explain the role of pylori in the pathogenesis of peptic ulcers. Which populations are most susceptible to peptic ulcers? Is H. pylori normal flora? If so, what causes the species to become pathogenic? Construct at table to compare and contrast the 5 steps of microbial pathogenesis. How does extracellular growth differ from intracellular growth? Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram. (2 points) Explain the pathogenesis of Listeria monocytogenes. Be sure to include temperature regulation, intracellular growth, and at risk groups in your discussion.Staphylococcus aureus has five types of toxins that help out with its virulence. They are enterotoxin, exofoliative toxin, toxic shock syndrome toxin, leukocidin and hemolysins. Please choose 3. Explain the damage they specifically can cause and how this is beneficial to the bacteria.Which of the following is NOT true of bacterial exotoxins? 1. Important in the pathogenesis of many human diseases 2. Their toxic effect can be systemic, affecting cells distant from the primary site of infection 3. None of the other four answers (All are true of bacterial exotoxins) 4. Different exotoxins may affect different types of cells (e.g., nerves, gastrointestinal mucosa) 5. Some exotoxins have two components, A (active) and B (binding)
- Based on disease syndromes and characteristics, and also on their effect on certain cell cultures and serological groupings, five virulence groups of Escherichia coli are recognized. Briefly distinguish between these virulence groups. [Base your answer on virulence factors, pattern of bacterial attachment to host cells, effects of attachment to host cells, production of toxins, and invasiveness] What will the appearance of Escherichia coli be on MacConkey Agar red and Eosin Methylene Blue (EMB) agar, respectively.During a recent morbidity report at your local hospital, you noted a 50 year old firefighter recovering from smoke inhalation and severe burns received on the job. While recovering from a skin graft, the patient developed sudden and severe upper right quadrant pain accompanied by fever, nausea and vomiting. An abdominal ultrasound demonstrated Murphys sign along with gas in the gallbladder. Escherichia coli Alcaligenes faecalis Bacillus megaterium Bacillus cereus Citrobacter freundiiIf the diagnostic tests reveal the presence of high numbers of staphylococci, discuss the probable conditions that are producing the given signs and symptoms. (See Clinical Signs and Symptoms of Infection.)
- Pseudomonas is a gram-negative rod-shaped bacterium, sometimes inhabits the intestinal tract, and considered an important cause of urinary tract infection and sepsis, however, it is not a member of family Enterobacteriaceae. Discus this statement, keep your response within 80-100 characters limit.*What are the virulence factors of Salmonella typhi? Explain each factors in simple terms.Please select all of the statements that apply to chlamydial infections. (NOTE: Please change all question marks to checkmarks for correct answers or empty boxes for incorrect answers.) Check All That Apply Caused by Chlamydia trachomatis, a rod-shaped bacterium. Caused by Chlamydia trachomatis, a rod-shaped bacterium. Causative agent is an obligate intracellular parasite. Causative agent is an obligate intracellular parasite. Causative agent has two forms: elementary body and reticulate body. Causative agent has two forms: elementary body and reticulate body. Causative agent has two stages: cercaria and miracidium. Causative agent has two stages: cercaria and miracidium. Newborn babies of infected mothers can develop chlamydial eye infections.