1. Acute otitis media in children is most commonly due to:M. CatarrhalisH. InfluenzaStaphylococcus aureusSteptococcus pneumoniaQuestion 1 of 20 2. Which of the following is true about staining?Gomarri's methenamine silver stains fungi greenHematoxylin and eosin stain DNA red or pinkCalcoflour white stains acanthamoeba blackGram negative bacteria stain redQuestion 2 of 20 3. All of the following statements about Pontiac fever are true, exceptPneumonia is most common manifestationAntibiotic therapy is not requiredHas a High Attack RateOccurs in EpidemicsQuestion 3 of 20 4. Ovalbumin was injected into a Rabbit. Which of the following classes of Antibiotics are likely to be produced initially:IgMIgDIgGIgEQuestion 4 of 20 5. Which of the following has been shown to be the most effective antimicrobial agent for reducing plaque and gingivitis long-term?Stannous fluorideChlorhexidineQuaternary ammonium compoundsPhenolic compoundsQuestion 5 of 20 6. Most common organism associated with reactive arthritis:StaphylococcusYerseniaShigellaChlamydiaQuestion 6 of 20 7. Legionnaire's disease - false is?Can infect amoeba intracellularlyWater borne diseaseHuman to human transmission is seenAb in urine is diagnosticQuestion 7 of 20 8. A five year old child presents with pustular lesions on the lower legs. The culture from the lesion showed hemolytic gram positive coccii. Provisional diagnosis of Group A streptococcal pyoderma can be done by:Bile solubilityCatalase positivityOptochicin sensitivityBacitracin sensitivityQuestion 8 of 20 9. Which of the following statements about campylobacter jejuni is falseCommonest agent responsible for campylobacterosisPoultry is a common source of infectionAssociated with Guillain Barre SyndromeHumans are important reservoirs of infectionQuestion 9 of 20 10. Which of the following statements regarding Legionella pneumonia is trueLegionnaires disease is also known as Pontiac feverHigh Person to Person transmissionLegionella antigens in the urine is the gold standard of diagnosisAspiration is an important mode of transmissionQuestion 10 of 20 11. Sterilization means:Kills all organisms in a specific environmentKills pathogenic organisms but not sporesKill spores and only pathogenic organismsKills all pathogensQuestion 11 of 20 12. Which is not true about vibrio choera:Grows on simple mediaMan is the only natural hostCannot survive in extracellular environmentIt is non halophilicQuestion 12 of 20 13. One of the following is a treponemal test for diagnosis of syphilisFTABKahn testWidal testWasserman testQuestion 13 of 20 14. Regarding IgE, which of the following is false?Causes anaphylaxisImmediate reactionCross placentaFix complementQuestion 14 of 20 15. Which of the following is false about clostridium perfringes -Show positive naegler reactionFood poisoning causing strains of cl. perfringes produce heat resistant SporesCl. perfringes is the most common cause of gas gangreneMost important toxin is hyaluronidaseQuestion 15 of 20 16. NK CELL acts on viruses becauseNON Expression of MHC II on cell surface receptorNon Expression of MHC I on cell surface receptorExpression of MHC I on cell surface receptorExpression of MHC II on cell surface receptorQuestion 16 of 20 17. Pentameric structure:IgDIgMIgAIgGQuestion 17 of 20 18. HIV can be detected and confirmed by:Polymerase Chain Reaction (PCR).Mimic PCR.Reverse Transcriptase-PCR.Real Time PCR.Question 18 of 20 19. Graft versus host reaction is caused byMonocytesT-lymphocytesB-lymphocytesLeukocytesQuestion 19 of 20 20. Most of the drug resistance occurs due toMutationTransformationTransductionConjugationQuestion 20 of 20 Loading...
