病原與免疫學(xué)習(xí)通課后章節(jié)答案期末考試題庫2023年_第1頁
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病原與免疫學(xué)習(xí)通課后章節(jié)答案期末考試題庫2023年Agroupofteenagersbecameillwithnausea,vomiting,severeabdominalcramps,anddiarrheaaftereatingundercookedhamburgersfromalocalrestaurant.Twooftheteenagerswerehospitalizedwithhemolytic-uremicsyndrome.E.coliO157:H7wasisolatedfromthepatient’sstoolsaswellasfromuncookedhamburgers.TheO157referstowhichbacterialstructure?

參考答案:

Lipopolysaccharide

AllofthefollowingmetabolicproductsofbacteriaareassociatedwithpathogenicityEXCEPT

參考答案:

bacteriocin

Whichofthefollowingprocessescontributetotheappearanceofmutationsingenes?

參考答案:

Alloftheabove

?Manyvirusesmaturebybuddingthroughtheoutermembraneofthehostcell.EachofthefollowingstatementsregardingthesevirusesiscorrectEXCEPT

參考答案:

Someofthesevirusesdonothaveanenvelope

GroupAstreptococciarethemostcommonbacterialcauseofpharyngitisinschool-agechildren5–15yearsofage.Themostimportantcellcomponentinvolvedinadherenceofthesebacteriatofibronectin,whichcoverstheepithelialsurfaceofthenasopharynxis

參考答案:

Lipoteichoicacid

Regardingtheresistanceoffungi,thewrongoneis

參考答案:

Heatresistance,cannotbekilledat60℃for1hour

Insomecasesintactvirusesarenotneededtoinfectacell.Infectiousproteinmoleculesthatcancausediseasearegiventheterm

參考答案:

Prions

WhichONEofthefollowingstatementsaboutgeneticchangesofvirusesiscorrect?

參考答案:

Reversetranscriptionofretrovirusesisoftenerror-prone

WhichofthefollowingarethefirstproductsproducedbyHIV?

參考答案:

DNA

Whichofthefollowingispresentinthecellsoffungi,butNOTpresentinbacterialcells?

參考答案:

Nucleus

Themainfunctionoffungalsporesis

參考答案:

Breeding

Whichoneofthefollowingmaterialbelongstocatabolicproductsofbacteria?

參考答案:

Hydrogensulfide

Manyvirusescanbegrowninthelaboratory.Whichofthefollowingstatementsaboutviruspropagationisnottrue？

參考答案:

Somevirusescanbepropagatedincell-freemedia

Thetemperatureatwhichthebiphasicfungiformyeast-typecoloniesontheculturemediumis

參考答案:

37℃

Virusesusuallyinitiateinfectionbyfirstinteractingwithreceptorsonthesurfaceofcells.Whichofthefollowingstatementsismostaccurateaboutcellularreceptorsforviruses?

參考答案:

Successfulinfectionofacellbyavirusmayinvolveinteractionwithmorethanonetypeofreceptor

TheviralDNAofthetemperatephage,insteadoftakingoverthefunctionsofthecell’sgenes,isincorporatedintothehostDNAandbecomesaprophageinthebacterialchromosome,actingasagene.Thishappensin

參考答案:

lysogeny

WhichoneofthefollowingisNOTtrueaboutbacteria?

參考答案:

HaveeitherDNAorRNA

Whichoneofthefollowingstatesaprincipleregardingviralnucleicacid?

參考答案:

Somevirusescontainasegmentedgenome

The

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