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PARASITOLOGY- EXAM REVIEW- QUIZ QUESTIONS WITH 100% CORRECT ANSWERS.
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PARASITOLOGY- EXAM REVIEW- QUIZ QUESTIONS WITH 100% CORRECT ANSWERS.
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PARASITOLOGY- EXAM REVIEW- QUIZQUESTIONS WITH 100% CORRECT
ANSWERS
If ffa ffparasite ffhas ffa ffsexual ffstage, ffthe ffhost ffin ffwhich ffthis ffstage ffoccurs ffin ffis: ff-
ffAnswer ffDEFINITIVE ffHOST: ffthe ffhost ffwhich ffharbors ffthe ffadult ffor ffsexual ffstages
ffof ffthe ffparasite
In ffthe ffUS, ffwith fftemperate ffclimate, ffthe ffmost fffrequently ffencountered ffenteric
ffparasites ffare: ff- ffAnswer ffCryptosporidium ffand ffGiardia
The ffBristol ffStool ffChart ffis ffa ffreference fffor ffevaluating fffeces ffbased ffon: ff- ffAnswer
ffConsistency
In ffa ffhospital ffsetting, ffa ffspecimen ffof ffunformed fffeces ffis ffbrought ffto ffthe fflab
ffimmediately ffafter ffcollection; ffyou ffknow ffthat ffit ffcannot ffbe ffexamined ffimmediately
ffso ffyou ffwould: ff- ffAnswer ffMix ffa ffsample ffof ffit ffinto ff10% ffformalin ffand ffa ffsample
ffinto ffpolyvinyl ffalcohol ff(PVA)
We ffare ffincreasing ffuse ffof ffimmunoassay ffin ffparasitology, ffour ffconcern ffis/are ff-
ffAnswer ffThe ffcompatibility ffif ffthe fffixative(s) ffused ffto ffpreserve ffthe fffecal ffspecimen ff
The ffpossibility ffof ff"missing" ff(not ffdetecting) ffparasites ffother ffthan ffthose ffdetected ffby
ffthe ffimmunoassay
"Non-traditional" ffparasitology ffstain(s) ffthat ffnow ffhave ffan ffimportant ffrole ffin
ffparasitology ffmicroscopy ffinclude ff- ffAnswer ffCalcofluor ffwhite ffstain;
Modified ff(reduced ffdecolorization) ffacid fffast ffstain; ffand
Gram ffstain
In ffa fftemperate ffclimate, ffin ffa ffdeveloped ffcountry, ffe.g. ffthe ffUS, ffwhat fffactors ffmay
ffinfluence ffthe fftype ffof ffparasites ffone ffmight ffexpect ffto ffsee ffin fffecal ffspecimens ff-
ffAnswer ffRural ffvs. ffurban ffsetting ff
Travel ffhistory ffof ffpatients ffsubmitting ffspecimens ff
Racial ffand ffethnicity ffconsiderations ffof ffthe ffpatients ffserved
, What fftype ffof ffinfections ffmay ffbe ffcaused ffby ffall ff3 ffof ffthe ffgenera ffof fffree-living
ffamebae, ffNaegleri, ffAcanthamoeba, ffand ffBalamuthia ff- ffAnswer ffCentral ffnervous
ffsystem ff(CNS) ffinfections
In ffwhich ffof ffthe fffree-living ffamebae ffgenera ffin ffthere ffa ffflagellate ffstage ff- ffAnswer
ffNaegleri
Cysts ffof ffthe fffree-living ffamebae fftypically ffhave ffwhich ffof ffthe fffollowing ffproperties ff-
ffAnswer ffResistance ffto ffdrying ff(dessication)
Resistance ffto fflow fflevels ffof ffdisinfection. ffE.g. ffas ffin ffpotable ffwater ffsupplies ff
Cysts ffwall ffcontains ffcellulose/ ffchitin ffand ffstains ffwell ffwith ffcalcofluor ffwhite
Which ffof ffthe fffollowing ffare ffno fflonger ffconsidered ffto ffbe ffan ffameba ff- ffAnswer
ffDientamoeba fffragilis
In ffwhich ffif ffthe fffollowing, ffpreviously ffthought ffnot ffto ffhave ffa ffcyst ffstage, ffhas ffa
ffcyst ffstage ffrecently ffbeen ffdescribed ff- ffAnswer ffDientamoeba fffragilis
Intermittent ff"showering" ffof fforganisms ffin fffeces ffmay ffoccur ffwith ffmany ffof ffthe
ffintestinal ffprotozoa, ffbut ffits fffrequently ffencountered ffwith ff- ffAnswer ffGiardia fflamblia
You ffare ffexamining ffa fftrichrome-stained ffsmear ffof ffliquid fffeces ffwith ffx100 ffiol
ffimmersion, ffyou ffsee ffwhat ffappear ffto ffbe ffsome fflittle ff"faces" fflooking ffback ffat ffyou.
ffThese ffare ff- ffAnswer ffTrophozoites ffof ffGiardia fflamblia
With ffwhich ffif ffthe fffollowing ffis ffthe ffcyst ffstage ffresistant ffto ffadvanced ffconditions ffin
ffthe ffenvironment, ffe.g. ffdrying, ffpotable fflevels ffof ffchlorine ffin ffwaters ff- ffAnswer
ffEntamoeba ffhistolytica/ ffdispar
Giardia fflamblia
What fffeatures ffof ffan ffsmebal ffnucleus ffmay ffbe ffdetermined ffin ffa fftrichrome-stained
ffsmear ffbut ffnot ffin ffan ffunstained ffwet ffpreparation. ff- ffAnswer ffPeripheral ffchromatin
Size ffand ffposition ffof ffthe ffkaryosome
Which ffof ffthe fffollowing ffis/are ffin ffthe ffCDC's fflist ffof ffthe ff5 ffneglected ffparasitic
ffinfections ff(NPI) ffin ffthe ffUSA ff- ffAnswer ffTrichomoniasis
For ffthe fflab, ffdiagnosis ffof fftrichomonas, ffwhich ffof ffthe fffollowing ffis ffthe ffcorrect fforder
fffor ffsensitivity ff- ffAnswer ffCulture ff> ffacridine fforange ffstained ffsmear ff> ffwet
ffpreparation
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