Microbiology MCQs

Page No. 1

The causative organism of syphilis is___________?


aBorrelia burgolorferi


bChalamydia trachomatis


cLeptospira interrogans


dTreponema pallidum


View Answer Treponema pallidum

An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other antibiotics which of the following organisms is it likely to be ?


a Escherichia coli


bKlebsiella pnemoniae


cProteus miribilis


dPseudomonas aeruginosa



Bacteria reproduce mainly by______________?


aBudding


bBinary fission


cSporing


dBacterial components produced by host cells


View Answer Binary fission

All of the following are true of streptococcus except_____________?


aIt’s group of lactic acid production bacteria


bShows adherence to dental enamel


cMost common in humans


dMost common is animals



The specific test for Treponema pallidum is___________?


aVDRL


bKahn’s test


cTPHA


dWidal test


View Answer TPHA

The difference between gram positive and negative bacteria lies in their_______________?


acell wall


bcell membrane


cNuclear material


dMesosomes


View Answer cell wall

The commonest method of detection of diptheria carriers is_______________?


a Schick test


bDick test


c Casoni’s test


d Charles’ test


View Answer Schick test

Toxic shock syndrome is due to the following virulence factor_____________?


a M protein


bPyrogenic exotoxin


cStreptolysin 0


dCarbohydrate cell wall


View Answer Pyrogenic exotoxin

Endotoxin have all but one of the properties given below_______________?


aProduced by gram negative bacteria


bProduced by gram positive bacteria


cNot secreted outside the cell


dCannot be toxoided



Organ of locomotion in bacteria is________________?


aFimbria


bFlagella


cCapsule


dCell wall


View Answer Flagella

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