Coxiella burnetti

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Home>Homework Answsers>Nursing homework helpCoxiella burnettiBackgroundThe life cycle ofCoxiella burnetiiwasn’t described until 1981, although the bacterium had been recognized more than 40 years earlier. Observations made by many researchers were finally assembled to show that this bacterium has a more complex life cycle than most. See if you can propose a life cycle for this bacterium from the information provided.Coccoid and bacillary forms ofCoxiella burnetiiwere first described in 1938. Subsequently, other researchers described round particles that passed through bacteriological filters (0.45 µm) and were capable of infecting guinea pig cells.In 1981, electron microscopy studies ofCoxiellarevealed a large cell variant (LCV) and a small cell variant (SCV). The LCV has inner and outer membranes separated by a periplasm containing little peptidoglycan. The SCV lacks a periplasm and has a large peptidoglycan layer. LCVs develop a dense area in the periplasm at one end of the cell when nutrients are depleted or the pH increases. This area contains DNA and ribosomes.In one study, suspensions of C.burnetiiwere put in distilled water, exposed to sonication (high-frequency vibration used to disrupt cells), and incubated at 45° C for 3 hr. Only SCVs were present after this treatment.Coxiellaundergo binary fission in a host cell phagolysozyme. LCVs metabolize and divide more rapidly than SCVs.* Please be sure to submit your answers to the following questions as an attachment to the dropbox within this week’s assignment section.1.  Propose a life cycle forCoxiella.2.  Why doCoxiellashow variable Gram stain results-that is, they may stain gram-positive or gram-negative? Should they be classified as gram-positive or gram-negative?3.  What disease doesC. burnetiicause? Why can this disease be transmitted by airborne routes while other (closely related) rickettsia require insects and ticks for transmission to humans?5 years ago22.07.20202Report issueAnswer(1)Michelle Geek4.8(699)5.0(69)ChatPurchase the answer to view itThelifecycleforCoxiellaburnetti.docx5 years agoplagiarism checkPurchase $4Bids(38)MUSYOKIONES A+Amanda SmithMichelle GeekMiss_AqsaDexterMastersrunge-kutta acermichael smithMiss LynnErick TylerbennetsandovaCatherine OwensDr R Judy MarkEXCELLENT GRADESAll Works solverkim woodsJOHN JUNIOR001Miss ProfessorProff work phdPhd isaac newtonJen Tech1other Questions(10)FIN571 FIN/571 Analyzing Pro Forma Statements Week 4Multiple choiceWriting HypothesesMendel and the re-discoverers of genetics Correns, de Vries and Tschermak identified discrete traits whose patterns of inheritance followed interpretable rules. But most traits found in animals and plants were continuous, not discrete, and tended to mixMGT 410 WEEK 7Expert AnswersFIN 571 week 4 Learning Team Reflection University of PhoenixHealth service finance classReseach InstrumentsECO 550 Assignment 2 Operations Decisions

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