Microbiology And Parasitology Questions And Answers Rated A+.

Microbiology And Parasitology Questions And Answers Rated A+. When twas tthe tterm tmicrobiology tfirst tused t- t t t tcorrect tanswer.1860s What tfour tareas tof tstudy tare tencompassed tby tclinical tmicrobiology t- t t t tcorrect tanswer.Viruses, tfungi, tbacteria, tand tparasites What tis tthe tdifference tbetween ta tpathogen tand tan topportunistic tpathogen t- t t t tcorrect tanswer.Pathogen: ta tbacteria tcapable tof tcausing ta tdisease Opportunistic tpathogen: tmicroorganisms tthat tinvade tthe tbody tand tcause tillness tonly twhen tthe tbody's timmune tdefense tare timpaired tor tabsent How tdo tbacterial tpathogens tcause thost tdamage t- t t t tcorrect tanswer.The tdamage tis tcaused tby tbacterial tgrowth tin ttissues tor ty tthe ttoxins tbacteria tproduce What tare tthe tmorphological ttypes tof tbacteria t- t t t tcorrect tanswer.Coccus, tbacillus, tand tspirochete What tare tthe tmorphological tforms tof tfungi t- t t t tcorrect tanswer.Molds tand tyeast What tis ta tgram tstain? t- t t t tcorrect tanswer.A ttest tthat tuses ta tseries tof tstains tto tdifferentiate tthe tcomposition tof ttheir tcell twalls Gram tpositive- tviolet t(retain tthe tcrystal tviolet tstain) Gram tnegative- tpink t(lose tthe tcrystal tviolet tand tretain tthe tsafranin) What tis tthe tdifference tbetween taerobic tand tanaerobic tbacteria t- t t t tcorrect tanswer.Aerobic tbacteria tgrow tin tthe tpresence tof toxygen Anaerobic tbacteria tgrow tin tthe tabsence tor tdecreased tlevels tof toxygen How tare tviruses tdifferent tfrom tmicroorganisms? tName t3 tviral tdiseases t- t t t tcorrect tanswer.Viruses tare tnot tliving tcells, tand tcan tonly treplicate tby tinvading ta tcell, tviruses tcan tonly tcontain teither ta tDNA tor tRNA tnot tboth Epstein-Barr tvirus t(mono), trubella, trhinoviruses What ttype tof tspecimen tis tused tto tdetect tmalaria tand tgiardia t- t t t tcorrect tanswer.Malaria trequires tblood tspecimen Giardia trequires tfecal tspecimen Five tmethods tused tto thelp tidentify tbacteria t- t t t tcorrect scopic tmorphology- tcoccus, tbacillus, tspirochete colony tmorphology- thow tthe tcolony tgrows ton tthe tplate t reactions twith tGram tstain tand tother tstains, t biochemical treactions, t gene tprobes antibody treactions- tantibiotic tsusceptibility ttesting antibiotic tsusceptibility ttesting t- t t t tcorrect tbe troutine tlike tstrep only tworks tfor tbacteria finding tthe tminimum tinhibitory tconcentration t(MIC) tto tinhibit tthe tbacterial tgrowth fastidious tbacteria t- t t t tcorrect ria tthat trequire tspecial tnutritional tfactors tto tsurvive immunoassay t- t t t tcorrect tanswer.a tdiagnostic tmethod tusing tantigen-antibody treactions Diagnostic tTesting t- t t t tcorrect tanswer.The tstandard tmethod tfor tisolating tand tidentifying tviruses thave tbeen tcell tculture. tAs twell tas tserum ttesting tfor tanti-viral tantibodies tusing tenzyme timmunoassays. What tcan tcause tcontamination tof ta tthroat tswab tduring tcollection? t- t t t tcorrect tanswer.Touching tthe ttongue tand tinside tof tthe tmouth twill tcontaminate tthe tswab twith tnormal tflora What tmistakes tcan toccur tin tthe tcollection tof turine tfor tculture? t- t t t tcorrect tanswer.The tpatient tcan tinsufficiently tcleanse tthe tarea taround tthe turethral topening tand tcontaminate tthe turine twith tskin tmicroorganisms, tepithelial tcells tand tmucus Why tstool tspecimens tin tan tinfants tdisposable tdiaper tmay tnot tgrow tmicroorganisms t- t t t tcorrect se tdiapers toften tcontain tbacteriostatic tchemicals tinhibiting tmicroorganisms tfrom tgrowing Why tshould tthe tpatient trinse ttheir tmouth twith twater tbefore tcollecting tsputum tsample? t- t t t tcorrect treduce tthe tnumber tof toral tbacteria tpresent tthat tcan tcontaminate tthe tsputum tsample why tis tan taspirate tof ta twound tpreferred tover ta tswab? t- t t t tcorrect tswab tis tmore tprone tto tdrying tand tin taddition tmay tnot tpick tup tsufficient tbacteria tfor tculture why tare tboth talcohol tand tiodine tused tin tpreparation tfor ta tblood tculutre t- t t t tcorrect tcleansing tis tnot tthorough, tskin tbacteria tor tfungi tcan tcontaminate tthe tculture tand tproduce tfalse-positive tresults 3 timportant tproperties tof ttransport tsystems tfor tbacteriology tspecimens t- t t t tcorrect tanswer.A tcontainer tcapable tof tproviding tthe tcorrect tenvironment tuntil tthe tbacteria tcan tbe tinoculated, tthe ttest trequisition tform tand tspecimen tlabel What ttype tof tculture tperformed tto tdetermine tMRSA t- t t t tcorrect tswab tspecimen carrier t- t t t tcorrect tindividual twho tharbors tan torganism tand tis tcapable tof tspreading tthe torganism tto tothers, tbut thas tno tsymptoms tor tsigns tof tdisease What tare tthe t3 tcategories tof ttransmission-based tprecautions? tgive tan texample tof ta tcondition tor tdisease trelated tto teach tprecaution t- t t t tcorrect tanswer.Contact- tinfections tspread tprimarily tby tclose tor tdirect tcontact- tMRSA Droplet- tinfections teasily ttransmitted tthrough tshort tdistances- tpertussis Airborne- tinfections ttransmitted tby tlong tdistances tairborne troute- tvaricella standard tprecaution tvs ttransmission tbased tprecaution t- t t t tcorrect ards tare talways tused, tregardless tof tdiagnosis, ttreating tall tblood tand tbodily tfluids tas tif tinfectious transmission tbased tprecautions- tused tin taddition tto tstandard, tprovide tadditional tprotection tof ttransmission tbased tinfections protective tisolation t- t t t tcorrect tion tcategory tto tprotect thighly tsusceptible tpatients tfrom texposure tto tinfectious tagents; treverse tisolation nonsocomial tinfection t- t t t tcorrect hcare-associated tinfection infection tacquired twhile tbeing ttreated tfor tanother tcondition tin ta thealthcare tsetting fomite t- t t t tcorrect mate tobjects tsuch tas tbed trails, tlinens tor teating tutensils twhich tcan tbe tcontaminated twith tinfectious torganisms tand tserve tas ta tmeans tof ttheir ttransmission How tare tparasitic tinfections tusually tdiagnosed? t- t t t tcorrect tanswer.Finding tand tidentifying tthe tparasite teither tmacroscopically tor tmicroscopically tor tby timmunological ttests. tHave tto tlook tin tthe tright tplace The t3 tmajor tgroups tof torganisms tthat tcontain thuman tparasites? t- t t t tcorrect tanswer.Arthropods- tinsects, thelminths- tworms, tand tprotozoa- tsingle tcell What tbody tsites tcan tbe tinfected tby tparasites? t- t t t tcorrect tanswer.External tbody tsurfaces, texternal tbody tcavities, tthe tintestinal ttract, tand ttissues tand torgans tsuch tas tblood, tbone tmarrow, tbrain tlung tor tliver. Factors tthat taffect tthe tseverity tof tparasitic tinfections t- t t t tcorrect tanswer.Parasite tnumbers, tsize, tlocation, ttoxicity, thost tcondition What tare tways tparasitic tdiseases tcan tbe ttransmitted? t- t t t tcorrect tanswer.Through tcontact twith tan tinfected tperson, tingestion tof tan tinfective tform, tor tthrough tinsect tbites Methods tused tto tprevent tor tcontrol tparasite tinfections t- t t t tcorrect tanswer.Blocking ttransmission tof tthe tinfective tform, tproviding thealth teducation, timproving tsanitation, tidentifying tand ttreating tinfected tindividuals, tand tdeveloping tvaccines Four tgroups tof tprotozoan tparasites t- t t t tcorrect tanswer.Amebae, tflagellates, tciliates, tand tsporozoan Three tgroups tof tparasitic thelminths t- t t t tcorrect todes t(flukes), tcestodes t(tapeworms), tand tnematodes t(roundworms) How tare tintestinal tparasitic tinfections tusually tdiagnosed t- t t t tcorrect ology tby teither tcysts, ttrophozoites tor toocyts tin tfecal tspecimens. tImmunological ttest tassays tthat thave thigh tsensitivity tand tdetect tlow tlevels tof tantigen, tlevels tthat tmight trequire tmicroscopic tand tmacroscopic tassay. Free tliving tameba t- t t t tcorrect tin tnature twithout ta thost, tbecomes ttoxic twhen tinvaded