BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
1. TruedordFalse.dTuberculosisdisdbestdidentifieddbydadGramdstain.
False.dMycobacteriumdshowdpoordGramdstainingdanddshowdbedscreeneddviadandacid-fastdstain.
2. TruedordFalse.dYoudcandbecomedinfecteddwithdTBdsimplydbydsharingdaddrinkdwithdsomeonedwhodisdcurrentlydinfecteddwithdT
B.
False.dAsdperdthedCenterdfordDiseasedControld(CDC)dguidelines,dsimplydshakingdsomeone'sdhand,dsharingdaddrinkd
ordevendkissingdcannotdspreaddTB.
3. Identifydtheddiseasedbaseddondthedfollowingd(selectdalldthatdapply):
Itdisdadsmall,dacid-
fastdroddusuallydremainingdasymptomaticdfordupdtod20dyears.dItdaffectsdthedskin,dnerves,dupperdrespiratorydtractdanddeyesd
ofdinfecteddindividuals.
A. Tuberculosis
B. Leprosy
C. Scalded-skindsyndrome
D. Hansen’sddisease
E. Bacterialdconjunctivitis
BdanddD.dHansen’sddiseasedisdsimplydanotherdnamedfordLeprosy.dLeprosydisdcharacterizeddbyditsdabilitydtodremaind
dormantdfordupdtod20dyearsdasdwelldasdthedeffectsdobserveddrelativedtodthedpatientsdskin,dnerves,dlungsdanddeyes.
1. TruedordFalse.dDirectlydingestingdclostridiumdorditsdassociateddsporesdwilldnotdcausedillnessdindadults.
True.dOnlydtheddirectdingestiondofdthedpre-formeddtoxindwilldcauseddisease.
2.dAd5-month-
olddchilddisdgivendhoneydatdbreakfastdanddbeginsdshowingdsymptomsdconsistentdwithdbotulism.dWoul
ddthedchild’sdillnessdbedclassifieddasdfoodborne,dinfantdordwounddbotulism?
Infant.dAlthoughdfoodd(honey)disdconsumed,dfoodbornedbotulismdisdderiveddfromdimproperlydcanned,dlowdaciddfoo
dsdunderdanaerobicdconditions.dSuchdconditionsdwerednotddescribed.dNodpuncturedwoundsdordinjuriesdwereddescr
ibed,drulingdoutdwound.dThedchilddisdsufferingdfromdinfantdbotulism,dasdhoneydisdadpotentialdcarrierdofdclostridium.
d Thedintestinaldtrackdofdyoungdchildrendisdstillddevelopingdanddclostridiumdisdabledtodcolonizedanddproducedthedas
sociateddtoxin.
1.dTruedordFalse.dTheredaredcurrentlydnodcuresdfordtetanus.
True.dAlthoughdthedsymptomsdcandbedtreatedditdisdonlydtodmanagedtheddiscomfortdnotdtodcure.
, BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
2. Identifydthedmedicaldconditiondcharacterizeddbydrobustdcarbohydratedfermentationdunderdanaero
bicdconditions,dswellingdofdthedinfecteddareasdanddfever.
Gasdgangrene.dThedkeydidentifierdheredisdthedrobustdcarbohydratedfermentation,dwhichdmani
festsdasdintensedgasdproductiondanddswelling—bothdtrademarkdconditionsdofdgasdgangrene.
3. Thedalpha-toxindperfringolysindisdassociateddwithdwhichdmedicaldconditiondcauseddbydGram-
positivedanaerobicdbacteria?
A. Tetanus
B. Botulism
C. Gasdgangrene
D. Leprosy
C. Gasdgangrene.dThedbacteriumdthatdproducesdthedalphadtoxindperfringolysindisd
aptlydnameddClostridiumdperfringens.
1. Youddevelopdadfever,dchillsdanddpneumoniadafterdrecentlydreturningdfromdadgetawaydweekenddw
heredyoudsatdindadhotdtub.dWhatdbacterialddiseasedwoulddaddoctordsuspectdisdcausingdyourdsymptom
s?dWoulddtheddoctordsuspectdyoudcontractedditdfromdanotherdperson?
Legionnaires.dNo—
legionelladcannotdbedspreaddsimplydbyddirectdcontactdbetweendpeople.dLegionelladcandonlydbedtr
ansmitteddthroughddropletsdsmalldenoughdtodbedbreatheddin.
2. TruedordFalse.dPneumonicdplaguedisdoftendcharacterizeddbydpainfullydswollendlymphdnodes.
False.dPneumonicdplaguedtargetsdthedrespiratorydsystemdwhiledbubonicdtargetsdthedlymphdsyst
, BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
em.
3. Whichdformdofdthedplaguedisdthedmostdrare?dWhatddoesditdtarget?
Septicemicdplaguedisdthedmostdraredandditdtargetsdthedblooddsystem.
1.dIdentifydthedfollowingddisease:
, BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
A. Tetanus
B. Anthrax
C. Gasdgangrene
D. Frostdbite
B.dAnthrax—theddistinctdblackdcenterdatdthedsitedofdinfectiondisdadhallmarkdofdanthraxdinfection.
2. Gonnorrheadisdcauseddby:
A. Diplococcicdbacteria
B. Staphylococcusdbacteria
C. Gram-Negativedspirochete
D. RNAdvirus
A.dDiplococcicdbacteria.
3. TruedordFalse.dChlamydiadtrachomatisdcandbedgrowndondandagardplatedalone.
False.dChlyamdiadisdandobligatedparasitedanddrequiresdadhostd(viabledcells)dforditsdgrowth.
4. Matchdthedfollowingddiseasesdwithdtheirdrespectivedsymptomsdifdleftduntreated:
Gonorrhea
C
Syphilis
A
Chlamydia
E
A. Paralysis,dblindnessdandddementia
B. Painfullydswollendlymphdnodes
C. Cardiacdanddneurologicaldcomplications
d d d d d d d
1. TruedordFalse.dTuberculosisdisdbestdidentifieddbydadGramdstain.
False.dMycobacteriumdshowdpoordGramdstainingdanddshowdbedscreeneddviadandacid-fastdstain.
2. TruedordFalse.dYoudcandbecomedinfecteddwithdTBdsimplydbydsharingdaddrinkdwithdsomeonedwhodisdcurrentlydinfecteddwithdT
B.
False.dAsdperdthedCenterdfordDiseasedControld(CDC)dguidelines,dsimplydshakingdsomeone'sdhand,dsharingdaddrinkd
ordevendkissingdcannotdspreaddTB.
3. Identifydtheddiseasedbaseddondthedfollowingd(selectdalldthatdapply):
Itdisdadsmall,dacid-
fastdroddusuallydremainingdasymptomaticdfordupdtod20dyears.dItdaffectsdthedskin,dnerves,dupperdrespiratorydtractdanddeyesd
ofdinfecteddindividuals.
A. Tuberculosis
B. Leprosy
C. Scalded-skindsyndrome
D. Hansen’sddisease
E. Bacterialdconjunctivitis
BdanddD.dHansen’sddiseasedisdsimplydanotherdnamedfordLeprosy.dLeprosydisdcharacterizeddbyditsdabilitydtodremaind
dormantdfordupdtod20dyearsdasdwelldasdthedeffectsdobserveddrelativedtodthedpatientsdskin,dnerves,dlungsdanddeyes.
1. TruedordFalse.dDirectlydingestingdclostridiumdorditsdassociateddsporesdwilldnotdcausedillnessdindadults.
True.dOnlydtheddirectdingestiondofdthedpre-formeddtoxindwilldcauseddisease.
2.dAd5-month-
olddchilddisdgivendhoneydatdbreakfastdanddbeginsdshowingdsymptomsdconsistentdwithdbotulism.dWoul
ddthedchild’sdillnessdbedclassifieddasdfoodborne,dinfantdordwounddbotulism?
Infant.dAlthoughdfoodd(honey)disdconsumed,dfoodbornedbotulismdisdderiveddfromdimproperlydcanned,dlowdaciddfoo
dsdunderdanaerobicdconditions.dSuchdconditionsdwerednotddescribed.dNodpuncturedwoundsdordinjuriesdwereddescr
ibed,drulingdoutdwound.dThedchilddisdsufferingdfromdinfantdbotulism,dasdhoneydisdadpotentialdcarrierdofdclostridium.
d Thedintestinaldtrackdofdyoungdchildrendisdstillddevelopingdanddclostridiumdisdabledtodcolonizedanddproducedthedas
sociateddtoxin.
1.dTruedordFalse.dTheredaredcurrentlydnodcuresdfordtetanus.
True.dAlthoughdthedsymptomsdcandbedtreatedditdisdonlydtodmanagedtheddiscomfortdnotdtodcure.
, BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
2. Identifydthedmedicaldconditiondcharacterizeddbydrobustdcarbohydratedfermentationdunderdanaero
bicdconditions,dswellingdofdthedinfecteddareasdanddfever.
Gasdgangrene.dThedkeydidentifierdheredisdthedrobustdcarbohydratedfermentation,dwhichdmani
festsdasdintensedgasdproductiondanddswelling—bothdtrademarkdconditionsdofdgasdgangrene.
3. Thedalpha-toxindperfringolysindisdassociateddwithdwhichdmedicaldconditiondcauseddbydGram-
positivedanaerobicdbacteria?
A. Tetanus
B. Botulism
C. Gasdgangrene
D. Leprosy
C. Gasdgangrene.dThedbacteriumdthatdproducesdthedalphadtoxindperfringolysindisd
aptlydnameddClostridiumdperfringens.
1. Youddevelopdadfever,dchillsdanddpneumoniadafterdrecentlydreturningdfromdadgetawaydweekenddw
heredyoudsatdindadhotdtub.dWhatdbacterialddiseasedwoulddaddoctordsuspectdisdcausingdyourdsymptom
s?dWoulddtheddoctordsuspectdyoudcontractedditdfromdanotherdperson?
Legionnaires.dNo—
legionelladcannotdbedspreaddsimplydbyddirectdcontactdbetweendpeople.dLegionelladcandonlydbedtr
ansmitteddthroughddropletsdsmalldenoughdtodbedbreatheddin.
2. TruedordFalse.dPneumonicdplaguedisdoftendcharacterizeddbydpainfullydswollendlymphdnodes.
False.dPneumonicdplaguedtargetsdthedrespiratorydsystemdwhiledbubonicdtargetsdthedlymphdsyst
, BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
em.
3. Whichdformdofdthedplaguedisdthedmostdrare?dWhatddoesditdtarget?
Septicemicdplaguedisdthedmostdraredandditdtargetsdthedblooddsystem.
1.dIdentifydthedfollowingddisease:
, BIOD 171: MICROBIOLOGY EXAM KEY Q & A
d d d d d d d
A. Tetanus
B. Anthrax
C. Gasdgangrene
D. Frostdbite
B.dAnthrax—theddistinctdblackdcenterdatdthedsitedofdinfectiondisdadhallmarkdofdanthraxdinfection.
2. Gonnorrheadisdcauseddby:
A. Diplococcicdbacteria
B. Staphylococcusdbacteria
C. Gram-Negativedspirochete
D. RNAdvirus
A.dDiplococcicdbacteria.
3. TruedordFalse.dChlamydiadtrachomatisdcandbedgrowndondandagardplatedalone.
False.dChlyamdiadisdandobligatedparasitedanddrequiresdadhostd(viabledcells)dforditsdgrowth.
4. Matchdthedfollowingddiseasesdwithdtheirdrespectivedsymptomsdifdleftduntreated:
Gonorrhea
C
Syphilis
A
Chlamydia
E
A. Paralysis,dblindnessdandddementia
B. Painfullydswollendlymphdnodes
C. Cardiacdanddneurologicaldcomplications
