1. One of the following is a treponemal test for diagnosis of syphilisFTABKahn testWidal testWasserman testQuestion 1 of 20 2. Diagnostic of Rabies -Guarneri bodiesCowdry A bodyNegri bodiesBollinger bodiesQuestion 2 of 20 3. Immunoglobulin bound on the surface of bacteria mediates phagocytosis by (Phagocytosis causes complement activation by)-Oxidase actionLysosmal burstC3b and FcReceptor mediated endocytosisQuestion 3 of 20 4. The most common pathogens responsible for nosocomial pneumonias in the ICU areGram negative organisms.Mycoplasma.Virus infections.Gram positive organisms.Question 4 of 20 5. Endotoxins have all but one of the properties given below:Produced by gram negative bacteriaNot secreted outside the cellCannot be toxoidedProduced by gram positive bacteriaQuestion 5 of 20 6. A farmer from the sub-Himalayan region presents with multiple leg ulcers. The most likely causative agent isCladosporiuni speciesAspergillusTrichophyton rubrumSporothrix schenkiiQuestion 6 of 20 7. The following hepatitis virus is transmitted by faeco-oral route: exceptHepatitis D VirusHepatitis E VirusHepatitis C VirusHepatitis B VirusQuestion 7 of 20 8. Which of these is true about antibodies:Secretory part of IgA is synthesized by plasma cellsIgM is an acute phase reactantIgM is seen in secondary responseIgE mediated delayed hypersensitivityQuestion 8 of 20 9. Which of the following is a powerful oxidizing agent that inactivates bacteria and most viruses by oxidizing free sulfhydryl groups?FormaldehydePhenolChlorineAlcoholQuestion 9 of 20 10. Which of the following is an enrichment medium?Blood agarSelenite F BrothNutrient BrothMac Conkey agarQuestion 10 of 20 11. Complement binding Immunoglobin via the classical pathway is -IgG & IgAIgG & IgDIgG & IgMIgD & IgEQuestion 11 of 20 12. All of the following statements about Pontiac fever are true, exceptAntibiotic therapy is not requiredHas a High Attack RatePneumonia is most common manifestationOccurs in EpidemicsQuestion 12 of 20 13. All of the following statements concerning immunity are true, except:Protection is provided primarily by the cell-mediated and antibody-mediated (humoral) arms of the immune systemThe main function of the immune system is to prevent or limit infections by microorganisms such as bacteria, viruses, fungi, and parasitesTwo other major components of the immune system are complement and phagocytesThe cell-mediated arm consists primarily of B lymphocytes whereas the antibody-mediated arm consists of T lymphocytesQuestion 13 of 20 14. Positive Shick's test indicates that person isImmune to diphtheriaSusceptible to diphtheriahypersensitive to diphtheriaCarrier of diptheriaQuestion 14 of 20 15. Reassortment is seen in -AstronovirusRotavirusHerpesvirusHepadnavirusQuestion 15 of 20 16. Which cells listed below help to assist other T cells and B cells to express their immune functions?T helper cellsPlasma cellsT suppressor cellsCytotoxic (killer) T cellsQuestion 16 of 20 17. All are true regarding Donavanosis except:Syphilis can occur concomitant with itEndemic in tropical areasCauses painful ulcerative genital lesionsThe causative organism is Calymmatobacter granulomatisQuestion 17 of 20 18. Method of sterilization for fibreoptic laryngoscope:HypochloriteAutoclaveGlutaraldehydeAlcoholQuestion 18 of 20 19. Germ tubes are formed mainly byCandida pseudotropicalisCandida albicansCandida stellatoideaCandida tropicalisQuestion 19 of 20 20. Zero growth rate is observed during one of the phases of the bacterial growth curve:DeclineStationary phaseLagExponential growthQuestion 20 of 20 Loading...