1. Which of the following is unique to gram-negative bacteria?CapsulesEndotoxinsFlagellaRibosomesQuestion 1 of 20 2. All of the following are Heterophile Agglutination tests, exceptPaul-Bunnel TestRose- Waller testCold Agglutination testWeil-FelixQuestion 2 of 20 3. Which system below is concerned chiefly with phagocytosis and antibody formation?Muscular systemNervous systemReticuloendothelial systemReticular activating systemQuestion 3 of 20 4. Opacity around colonies of Clostridium perfringens is due to -Theta toxinLecithinaseCytokininDesmotaseQuestion 4 of 20 5. All are true about Widal test except oneagglutinins lasts longer and hence is not indicative of recent infectionH agglutinins cannot differentiate between typesBaseline titer differ depending on endemicity of the diseaseAntibiotic treatment can modify resultsQuestion 5 of 20 6. Blood spills in hospital are disinfected withQuarternary ammonium compoundsCetavlonAbsolute alcoholSodium hypochloriteQuestion 6 of 20 7. Blood agar isTransport mediaEnriched mediaDifferential mediaSimple mediaQuestion 7 of 20 8. ELISA is:A radiologic procedureAn enzymatic immune reactionA name of a scientistA pioneer in dentistryQuestion 8 of 20 9. The following hepatitis virus is transmitted by faeco-oral route: exceptHepatitis B VirusHepatitis D VirusHepatitis E VirusHepatitis C VirusQuestion 9 of 20 10. Half-Life of free HIV in plasma is:12 hours6 hours24 hours3 monthsQuestion 10 of 20 11. Thumb print appearance in culture film smear is seenCtostridiurn welchiiBacillus anthracisBordetella pertussisBrucella speciesQuestion 11 of 20 12. A bacterial disease that has been associated with the 3 "Rs" i.e., rats, ricefields, and rainfall isMelioidosis.Plague.Rodent-bite fever.Leptospirosis.Question 12 of 20 13. Immunoglobulin bound on the surface of bacteria mediates phagocytosis by (Phagocytosis causes complement activation by)-Receptor mediated endocytosisLysosmal burstC3b and FcOxidase actionQuestion 13 of 20 14. Which of the following represents the BEST way to verity heat sterilization?Recording sterilizer pressureRecording duration of exposureUsing a chemical monitorTesting with biological indicatorQuestion 14 of 20 15. Complement binding Immunoglobin via the classical pathway is -IgD & IgEIgG & IgDIgG & IgAIgG & IgMQuestion 15 of 20 16. Infective dose of Salmonella Typhi is:One bacillus1 to 10 bacilli102 to 105 bacilli108 to 1010 bacilliQuestion 16 of 20 17. All of the following statements concerning immunity are true, except:Two other major components of the immune system are complement and phagocytesThe main function of the immune system is to prevent or limit infections by microorganisms such as bacteria, viruses, fungi, and parasitesProtection is provided primarily by the cell-mediated and antibody-mediated (humoral) arms of the immune systemThe cell-mediated arm consists primarily of B lymphocytes whereas the antibody-mediated arm consists of T lymphocytesQuestion 17 of 20 18. What is sterilization?Kills all pathogenic organismDestroying all organism in a given environmentDeactivate the spores and only pathogenic organismDestroying all organism except sporesQuestion 18 of 20 19. First immunoglobulin increased during immunityIgGIgDIgMIgAQuestion 19 of 20 20. True about Bacteroides is allSusceptible to most of the antibioticsPresent mainly in mixed infectionThey are bile resistant anaerobesB. fragilis is most virulentQuestion 20 of 20 Loading...
