1. Blood agar isEnriched mediaSimple mediaTransport mediaDifferential mediaQuestion 1 of 20 2. Non treponemal test in syphilisTPHAVDRLTPIFTA-ABSQuestion 2 of 20 3. True about mycobacterium other than tubercular bacilli:Person to person transmission is seenOccurs in persons with normal immunityCauses disseminated infectionCause decreased efficacy of BCG due to cross immunityQuestion 3 of 20 4. H. pylori infection is seen in all except:Fundal gastritisDuodenal ulcerGastric lymphomaGastric carcinomaQuestion 4 of 20 5. Which of the following is a powerful oxidizing agent that inactivates bacteria and most viruses by oxidizing free sulfhydryl groups?PhenolAlcoholChlorineFormaldehydeQuestion 5 of 20 6. Immunoglobulin crossing placenta isIgGIgAIgDIgMQuestion 6 of 20 7. Which of the following statements related to cross-infection is not true?Droplet nuclei less than 100 /lm in diameter are entrained in the air for many hoursprions are resistant to conventional sterilization methodsviral infections are unlikely to spread during the prodromal stageblood, saliva are regarded as fomites with respect to infection transmissionQuestion 7 of 20 8. The exact part of the antigen that reacts with the immune system is called asParatopeEpitopeIdiotopeCloneQuestion 8 of 20 9. How do you differentiate between Streptococcus and Staphylococcus infectionCoagulase testCatalase testOpotochin testBacitracin testQuestion 9 of 20 10. With reference to bacteriodes fragilis, the following statements are true except:The LPS formed by Bacteriodes fragilis is structurally and functionally different from the conventional endotoxinsShock and DIC are common in bacteriodes bacterimiaBacteriodes fragilis is a frequent anaerobe isolated from clinical samplesBacteriodes fragilis is not uniformly sensitive to metronidazoleQuestion 10 of 20 11. Which stage of plasmodium vivax is infective for mosquito?OokineteTrophozoiteSporozoiteGametocyteQuestion 11 of 20 12. Marker for chronic persistent HBV infection isAnti HBsAgIgM anti-HBcHBsAgHBeAgQuestion 12 of 20 13. The mechanism of genetic transfer where a phage serves as a vehicle IsConjugationTranslationLysogenyTransformationQuestion 13 of 20 14. Which of the following statement is true about bacteriophageIt helps in transformationIt transfers only chromosomal geneIt imparts toxigenicity to bacteriaIt is a bacteriumQuestion 14 of 20 15. Delayed tuberculin test response is due toT lymphocytesB LymphocytesHistiocytesMonocytesQuestion 15 of 20 16. Bacteria used in probiotics isE. ColiDiphtheriaAllBifidobacteriumQuestion 16 of 20 17. A patient presents with signs of pneumonia. The bacterium obtained from sputum was a gram positive cocii which showed alpha hemolysis on sheep agar. Which of the following test will help to confirm the diagnosis?Bacitracin sensitivityCAMP testBile solubilityCoagulase testQuestion 17 of 20 18. Both intranulear and intracytoplasmic inclusions are present in which of the following virusesPox VirusHepatitis B virusMeasles virusHIVQuestion 18 of 20 19. Microorganisms of which of the following genera are most predominant in the normal oral floraBacillusStaphylococcusStreptococcusLactobacillusQuestion 19 of 20 20. A patient states that he immediately begins wheezing and has difficulty breathing when exposed to penicillin Which of the following dosses of antibodies is responsible for the difficulty in breathing?IgEIgGIgAIgMQuestion 20 of 20 Loading...