Microbiology CSMLS Review Questions with complete solutions.

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MICROBIOLOGY CSMLS REVIEW o o




QUESTIONS
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WITH COMPLETE o




SOLUTIONS. o

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The opulmonary oform oof oanthrax ois oknown oas o
- Valley ofever o
- Walking opneumonia o
- Farmers' olung o
- Woolsorters odisease o- ocorrect oanswers.Woolsorters odisease o
o

Streptococci oare ounable oto osynthesize othe oenzyme o
- Catalase o
- Kinase o
- Hyaluronidase o
- Lipase o- ocorrect oanswers.Catalase o
(Organisms othat osynthesize othe oenzyme ocatalase oare oable oto oprotect othemselves
ofrom othe okilling oeffects oof oH2O2 oby oconverting oit oto oH2O oand oO2. oStreptococci oare

ounable oto odo othis) o
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Which oof othe ofollowing ois oNOT oappropriate owhen odescribing oStreptococcus
opneumoniae
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- oBile-

resistant
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- oAlpha

ohemolytic
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- oLancet-shaped, oGram opositive

odiplococcus
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- oVirulent ostrains oare oencapsulated o- ocorrect oanswers.Bile-
resistant
o

Streptococcus opyogenes ocan obe opresumptively oID'd ousing oa(an) o

,- PYR odisk o
- ONPG odisk o
- SPS odisk o
- Optochin odisk o- ocorrect oanswers.PYR odisk o
(The oID oof oGroup oA ostrep ocan obe oachieved othrough othe oPYR odisk otest) o
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A ogram opositive ococcus othat ois ocatalase opositive, ononmotile, olysostaphin oresistant,
oand omodified ooxidase opositive ois obest oidentified oas o

- Micrococcus o
- Lactococcus o
- Streptococcus o
- Staphylococcus o- ocorrect oanswers.Micrococcus o
(Staphylococci oand oMicrococci oare oboth oCatalase opositive. oMicrococci oare ooxidase
opositive, owhereas ostaphylococci oare onegative) o
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In othe oCAMP otest, oa osingle ostreak oof ostreptococcus ois oplaced operpendicular oto oa
ostreak oof o
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Staph. oaureus. oAfter oincubation, oa ozone oof oincreased olysis oin othe oshape oof oan
oarrow ois
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noted. oThis

oindicates?
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- oS.

oagalactiae
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- oS.

obovis
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- oS.

oequinus
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- oS. opyogenes o- ocorrect oanswers.S.
oagalactiae
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(They ocan obe opresumptively oID'd oby othe odemonstration oof oa oCAMP
oreaction)
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Staphylococcus osaprophyticus, oa orecognized opathogen, ois oa ocause oof o
- Furuncles o
- Impetigo o
- Otitis omedia o
- UTI o- ocorrect oanswers.UTI o
(The orecovery orate oof ocoagulase-negative oStaph osaprophyticus ofrom othe ourinary otract
oinfections oin oyoung ofemales ois osecond oonly oto othat oof oE.coli) o
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Exfoliatin oproduced oby oStaphylococcus oaureus ois oresponsible ofor
ocausing o- oEnterocolitis o

- Toxic oshock osyndrome o
- Scalded oskin osyndrome o
- Staphylococcal opneumonia o- ocorrect oanswers.Scalded oskin osyndrome o

, (Scalded oskin osyndrome ois oa oform oof odermatitis oproduced oby oStaph. oaureus) o
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The oetiologic oagent omost ocommonly oassociated owith osepticemia oand omeningitis oof
onewborns ois o

- S. oagalactiae o
- S. obovis ogroup o
- S. opneumoniae o
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- oS.pyogenes o- ocorrect oanswers.S.
oagalactiae


(This oorganism ois opart oof othe oindigenous omicrobial oflora oof othe
ovagina)
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A ocommon omember oof othe onormal oflora oof othe oupper orespiratory otract ois o o
- Corynebacterium ojeikeium o
- Lactobacillus o
- Staphylococcus oepidermidis o
- Viridans ostreptococcus o- ocorrect oanswers.Viridans ostreptococcus o
(They oare othe omost ocommon oNF oin oupper orespiratory ocultures oand oare oopportunistic
opathogens) o
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Streptococci oobtain oall otheir oenergy ofrom othe ofermentation oof osugars oto o o
- Formic oacid o
- Lactic oacid o
- Succinic oacid o
- Valeric oacid o- ocorrect oanswers.Lactic oacid o
(whether ogrowing oaerobically oor oanaerobically, ostreptococcus oobtain oall otheir oenergy
ofrom othe ofermentation oof osugar oto olactic oacid) o
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The oproduction oof oH2S ois oone ocharacteristic oused oto odifferentiate owhich oof othe
oaerobic ogram-positive obacilli? o

- Corynebacterium o
- Erysipelothrix o
- Lactobacillus o
- Nocardia o- ocorrect oanswers.Erysipelothrix o
(Unlike oother oaerobic ogram-positive obacilli, othis oorganism ocan oproduce oH2S owhich
ocan obe odemonstrated oin othe oTSI oagar) o
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Growth oin oa o48 ohour osemisolid oagar ostab oculture oat oRT oreveals olateral ofilamentous
ogrowth oaway ofrom othe ostab onear othe otop oof othe omedium. oThis oobservation ois omost

ocharacteristic oof owhich oorganism? o

- Rhodococcus osp. o
- Corynebacterium ourealyticum o
- Enterococcus ofaecalis o
- Listeria omonocytogenes o- ocorrect oanswers.Listeria omonocytogenes o
(Umbrella ogrowth oappearance) o
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