BACTERIAL ANATOMY MCQs TESTd d d
2026 update
d d
1. Whichdofdthedfollowingdbacteriadlackdadcelldwalldanddaredthereforedresistantdtodpenicillin?
d
A. Cyanobacteria
B. Mycoplasmas
C. Bdellovibrios
Spirochetes
D.
2.Adclusterdofdpolardflagelladisdcalled
A. lophotrichous
B. amphitrichous
C. monotrichous
D. PeritrichouS
3. Thedproteindfromdwhichdhookdanddfilamentsdofdflagelladaredcomposeddof,dis
A. Keratin
B. Flagellin
C. Gelatin
D. Casein
4. Thedcoocidwhichdmostlydoccurdindsingledordpairsdare
A. Streptococci
B. Diplococci
C. Tetracocci
D. Nonedofdthese
5. Whichdofdthedfollowingdmaydcontaindfimbriae?
A. Gram-positivedbacteria
B. Gram-negativedbacteria
C. Bothd(a)dandd(b)
, D. Nonedofdthese
6. Peptidoglycandaccountsdford ofdtheddrydweightdofdcelldwalldindmanydgramdpositivedbacteria
A. 50%dordmore
B. Aboutd10%
C. 11%+d0.22%
D. Aboutd20%
7. Bacteriadhavingdnodflagelladaredunabledto
A. Move
B. Reproduce
C. stickdtodtissuedsurfaces
D. growdindnutrientdagar
8. Whichdofdthedfollowingdisdtruedaboutdcelldwalldofdgram-positivedbacteria?
A. Itdconsistsdofdmultipledlayers
B. Itdisdthickerdthandthatdassociateddwithdgram-negativedbacteria
C. Itdcontainsdteichoicdacids
D. Alldofdthese
9. Thedcelldwalldof
A. gram-positivedbacteriadaredthickerdthandgram-negativedbacteria
B. gram-negativedbacteriadaredthickerdthandgram-positivedbacteria
C. bothdhavedsamedthicknessdbutdcompositiondisddifferent
D. nonedofdthes
10. Geneticdsystemdisdlocateddindthedprokaryotesdin
A. nucleoid
B. chromatin
,C. nucleardmaterial
D. alldofdthese
, BACTERIOLOGY MCQ s d d
MultipledChoicedQuestiondondEntericdBacteriad(E.dcoli,dSalmonelladsppdanddShigelladspp)
1) Intestinesdofdhumandanddotherdmammalsdaredthednaturaldhabitatdofdentericdorganisms,dadlarg
edfamilydofdbacteriadisdpresentdasdadnormaldflora,dwhichdofdthedfollowingdisdnotdthednormaldflorad
ofdintestine?
a) Escherichiadspp
b) Salmonelladspp
c) Staphylococcusdspp
d) Proteusdspp
2) Somedentericdbacteriadaredpartdofdnormaldinhabitantsdanddincidentallydcauseddiseasedbutdother
sdsuchdas. .... aredregularlydpathogenicdfordhumans.
a) Pseudomonasdspp
b) Streptococcusdspp
c) Salmonelladspp
d) Proteusdspp
3) Alldaredthedgeneraldcharacteristicsdofdentericdbacteria,dEXCEPT?
a) Catalasedpositive
b) Non-sporedforming
c) Growdindmediadwithdbiledsalts
d) Nitratednegative
4) Entericdbacteriadaredmainlydclassifieddbaseddondtheirdabilitydtodfermentdvariousdsugar
sdincludingdlactose.dWhichdofdthedfollowingdbacteriadisdadnon-lactosedfermenter?
a) Klebsielladspp
b) Salmonelladspp
c) Enterobacterdspp
d) Citrobacterdspp
5) Escherichiadcolidisdonedofdthedmajordentericdbacteriadthatdcausesddiarrheadanddisdcharacterize
ddaccordingdtoditsdvirulencedproperties.dAlldaredthedtypesdofdE.dcoli,dEXCEPT?
a) EnterohemorrhagicdE.dcoli
b) EnteropathogenicdE.dcoli
2026 update
d d
1. Whichdofdthedfollowingdbacteriadlackdadcelldwalldanddaredthereforedresistantdtodpenicillin?
d
A. Cyanobacteria
B. Mycoplasmas
C. Bdellovibrios
Spirochetes
D.
2.Adclusterdofdpolardflagelladisdcalled
A. lophotrichous
B. amphitrichous
C. monotrichous
D. PeritrichouS
3. Thedproteindfromdwhichdhookdanddfilamentsdofdflagelladaredcomposeddof,dis
A. Keratin
B. Flagellin
C. Gelatin
D. Casein
4. Thedcoocidwhichdmostlydoccurdindsingledordpairsdare
A. Streptococci
B. Diplococci
C. Tetracocci
D. Nonedofdthese
5. Whichdofdthedfollowingdmaydcontaindfimbriae?
A. Gram-positivedbacteria
B. Gram-negativedbacteria
C. Bothd(a)dandd(b)
, D. Nonedofdthese
6. Peptidoglycandaccountsdford ofdtheddrydweightdofdcelldwalldindmanydgramdpositivedbacteria
A. 50%dordmore
B. Aboutd10%
C. 11%+d0.22%
D. Aboutd20%
7. Bacteriadhavingdnodflagelladaredunabledto
A. Move
B. Reproduce
C. stickdtodtissuedsurfaces
D. growdindnutrientdagar
8. Whichdofdthedfollowingdisdtruedaboutdcelldwalldofdgram-positivedbacteria?
A. Itdconsistsdofdmultipledlayers
B. Itdisdthickerdthandthatdassociateddwithdgram-negativedbacteria
C. Itdcontainsdteichoicdacids
D. Alldofdthese
9. Thedcelldwalldof
A. gram-positivedbacteriadaredthickerdthandgram-negativedbacteria
B. gram-negativedbacteriadaredthickerdthandgram-positivedbacteria
C. bothdhavedsamedthicknessdbutdcompositiondisddifferent
D. nonedofdthes
10. Geneticdsystemdisdlocateddindthedprokaryotesdin
A. nucleoid
B. chromatin
,C. nucleardmaterial
D. alldofdthese
, BACTERIOLOGY MCQ s d d
MultipledChoicedQuestiondondEntericdBacteriad(E.dcoli,dSalmonelladsppdanddShigelladspp)
1) Intestinesdofdhumandanddotherdmammalsdaredthednaturaldhabitatdofdentericdorganisms,dadlarg
edfamilydofdbacteriadisdpresentdasdadnormaldflora,dwhichdofdthedfollowingdisdnotdthednormaldflorad
ofdintestine?
a) Escherichiadspp
b) Salmonelladspp
c) Staphylococcusdspp
d) Proteusdspp
2) Somedentericdbacteriadaredpartdofdnormaldinhabitantsdanddincidentallydcauseddiseasedbutdother
sdsuchdas. .... aredregularlydpathogenicdfordhumans.
a) Pseudomonasdspp
b) Streptococcusdspp
c) Salmonelladspp
d) Proteusdspp
3) Alldaredthedgeneraldcharacteristicsdofdentericdbacteria,dEXCEPT?
a) Catalasedpositive
b) Non-sporedforming
c) Growdindmediadwithdbiledsalts
d) Nitratednegative
4) Entericdbacteriadaredmainlydclassifieddbaseddondtheirdabilitydtodfermentdvariousdsugar
sdincludingdlactose.dWhichdofdthedfollowingdbacteriadisdadnon-lactosedfermenter?
a) Klebsielladspp
b) Salmonelladspp
c) Enterobacterdspp
d) Citrobacterdspp
5) Escherichiadcolidisdonedofdthedmajordentericdbacteriadthatdcausesddiarrheadanddisdcharacterize
ddaccordingdtoditsdvirulencedproperties.dAlldaredthedtypesdofdE.dcoli,dEXCEPT?
a) EnterohemorrhagicdE.dcoli
b) EnteropathogenicdE.dcoli
