State whether or not agree with this prediction. Explain When Shigella dysenteriae is on a countertop at 22°C in a person’s kitchen, the same cell contains more 16:0 and 18:0 in its plasma membrane than when it is living in the person’s gut at 37°C.
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State whether or not agree with this prediction. Explain
When Shigella dysenteriae is on a countertop at 22°C in a person’s kitchen, the same cell contains more 16:0 and 18:0 in its plasma membrane than when it is living in the person’s gut at 37°C.
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- OOOOOP All of the following are true about gas gangrene EXCEPT: Caused by the anaerobic bacterium Clostridium perfringens The etiologic agent stays confined to the site of initial infection and does not damage or invade other tissues Infection is caused by endospores from the soil or other environmental sources Begins with interruption of blood supply to tissue, causing cell death The etiologic agent ferments carbohydrates, producing CO2 and H2Answer 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.Diphtheria (diphtheria) spread through direct contact and aerosolized expulsions. C. diphtheriae have 3 substrains generation times - gravis (60 minutes), intermedius (100 minutes), and mitis (180 minutes). The gravis substrain is the most virulent as the toxic effects of diphtheria occur the fastest. Explain this in the terms of C. diphtheriae’s requirement for iron.
- 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.Question:- List and describe the infections caused by the organism Enterobacteriaceae.PLZ ANSWER ALL QUESTIONS Consider this case: 4 a. Helicobacter pylori metabolizes Urea and releases Ammonia. How would this affect the microenvironment of the stomach? B. Is this an important consideration in the treatment of Stomach Ulcers? Why or Why not? Citrate Utilization According to your results, what can you say about the bacteria that is able to use citrate as its sole carbon source? TSI Test Why does TSI contain less glucose than sucrose or lactose? Does an acidic slant indicate that the microbe is a coliform? Explain your answer. Production of H2S by bacteria growing anaerobically in the intestines is common. Some H2S is absorbed into the circulation and some is expelled as intestinal gas. Less commonly, in certain individuals, H2S producing bacteria can live in the plaque built up around their teeth. What undesirable effect might that…
- From figure. Which of the thioglycollate tubes in thefigure would be indicative of Bacillus and which would becharacteristic of Clostridium? Explain why this is true.Give typed full explanation of both question not written In January 2012, a physician in a Buenos Aires hospital telephoned the Ministry of Health (MOH) to report three possible cases of botulism. The patients, all men in their 30s, presented with drooping eyelids, double vision, difficulty swallowing, and respiratory problems. One patient had onset of symptoms on February 2, the other two on February 5. All three men worked in a local meat factory. What type of study is this? Case-control study Case series Ecologic study Cross-sectional study If the incidence rate of a very serious disease is 25 cases/100,000 person-months and the prevalence of this disease in the population is 75 cases/100,000 persons, what is the average survival time of individuals who contract this disease? 1 year 3 years 3 months 4 monthsHaemophilus influenzae must be grown on special blood agars, e.g. chocolate agar, which is blood agar treated with heat to release gorwth factors and to destroy inhibitory enzymes. Thus Haemophilus is described as fastidious oxygen-sensitive oxygen labile voracious
- 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.Legionella pneumophila secretes exoenzymes for digestion of cytoplasmic contents of infected cell, leads to cell death, increased edema. O True O FalseExplain how botulinum toxin alters the normal sequence of events at the neuromuscular junction to result in paralysis. Be sure to include the vesicular transport process that is inhibited.