1. Which of the following immunoglobulins is a pentamerIg AIg MIg DIg GQuestion 1 of 20 2. An example of naturally acquired passive immunity is:Immune blood transfusionGamma globulin injectionTetanus immunizationPlacentral transfer of antibodiesQuestion 2 of 20 3. The process of gene transfer between bacterial cells that involves the uptake of naked DNA molecules is classified as which of the following?TransformationConjugationTransductionTranslocationQuestion 3 of 20 4. Antibiotic sensitivity and resistance of microorganisms is determined byCultureDNA probeELISADirect microscopyQuestion 4 of 20 5. Which of the following statements related to cross-infection is not true?blood, saliva are regarded as fomites with respect to infection transmissionviral infections are unlikely to spread during the prodromal stageprions are resistant to conventional sterilization methodsDroplet nuclei less than 100 /lm in diameter are entrained in the air for many hoursQuestion 5 of 20 6. Blood agar isSimple mediaEnriched mediaDifferential mediaTransport mediaQuestion 6 of 20 7. Pathogenic treponemas can be maintained in: Chick embryosArtificial mediaTissue cultureRabbit testis onlyQuestion 7 of 20 8. Virus is usually cultured in:Non embryonated hen eggsSabourouds mediumEmbryonated hen eggsRogosa blood agarQuestion 8 of 20 9. All of the following statements about Parvovirus B- 19 are true, Except:It is a DNA virus<10% spread by transplacental routeRespiratory route is the primary mode of transmissionAffects erythroid progenitorsQuestion 9 of 20 10. MOST antibiotic resistance in bacteria is caused by which of the following?Unequal distribution of antibiotics into body spacesGenes that are carried on plasmidsAn ever increasing mutation rate in bacteriaDepression of a previously existing gene poolQuestion 10 of 20 11. Graft versus host reaction is caused byT-lymphocytesLeukocytesB-lymphocytesMonocytesQuestion 11 of 20 12. The role played by major histocompatibility Complex-1 and -2 is toTransduce the signal to T cells following antigen recognitionEnhances the secretion of cytokinesMediate immunoglobulin class switchingPresent antigens for recognition by T cell antigen receptorsQuestion 12 of 20 13. Which is not true about vibrio choera:It is non halophilicMan is the only natural hostCannot survive in extracellular environmentGrows on simple mediaQuestion 13 of 20 14. All are true regarding disinfectants except -Glutaraldehyde is sporicidalPhenol usually requires organic matter to actHypochlorites are virucidalEthylene oxide is intermediate disinfectantQuestion 14 of 20 15. Which of the following is the MOST important function of bacterial pill in causing human infectious disease?Allowing bacteria to adhere to human cellsDestroying phagocytic macrophages and neutrophilsMaking the bacteria motileTransferring DNA from one bacterium to anotherQuestion 15 of 20 16. A veterinary doctor had pyrexia of unknown origin. His blood culture in special laboratory media was positive for gram-negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture?Bartonella sppPasteurella sppBrucella sppFrancisella sppQuestion 16 of 20 17. HIV can be detected and confirmed by:Reverse Transcriptase-PCR.Mimic PCR.Polymerase Chain Reaction (PCR).Real Time PCR.Question 17 of 20 18. Marker for chronic persistent HBV infection isAnti HBsAgHBeAgHBsAgIgM anti-HBcQuestion 18 of 20 19. Not used in leptospirosis -Weil felix reactionMicroscopic agglutination testMacroscopic agglutination testDark field illuminationQuestion 19 of 20 20. Leukotrienes C4, D, and E4 are collectively known as:Slow-reacting substances of anaphylaxis (SRS-As)SerotoninHeparinHistamineQuestion 20 of 20 Loading...
