1. Which of the following statement is not true regarding Chlamydia Trachomatis:It is biphasicInside the cell it evades phagolysomeElementary body is metabolically activeReticulate body divides by binary fissionQuestion 1 of 20 2. Microorganisms of which of the following genera are most predominant in the normal oral floraStaphylococcusStreptococcusBacillusLactobacillusQuestion 2 of 20 3. What is the transport medium for choleraTellurfte MediumVenkatramari - Ramaknshrian MediumCalyblairmediumB&CQuestion 3 of 20 4. The biologic consequences of complement activation include:Chemotaxis of phagocytesImmune adherence and opsonisationAnaphylatoxin activityAll of the aboveQuestion 4 of 20 5. Which of the following is most resistant to antiseptics:SporeCystFungusPrionQuestion 5 of 20 6. Dimorphism in microorganisms is characterized by the capability to produceboth by budding and by production of spores.two distinct types of clinical infections.Both sexual and asexual spores.both a yeast phase and a mycelial phase.Question 6 of 20 7. All of the following agents have polysaccharide capsule related antigen antibody responses, except:Bordetella PertusisPneumococcusMeningococcusHaemophillus InfluenzaQuestion 7 of 20 8. Delayed tuberculin test response is due toB LymphocytesMonocytesHistiocytesT lymphocytesQuestion 8 of 20 9. Group A streptococci is best diagnosed by -Optochin sensitivityCatalase negativeBacitracin sensitivityBile solubilityQuestion 9 of 20 10. Actinomycosis is caused by:Retroviruscid fast. Non-motile bacillusFungusAnaerobic, gram positive, non-acid fast bacteria.Question 10 of 20 11. Each of the following cells is an antigen-specific cell EXCEPT one Which one is this EXCEPTION?MacrophagesT helper cellsB cellsLangerhans cellsQuestion 11 of 20 12. Oxidase positive Gram-negative bacilli that do not show coloured colonies on Mac-Conkey MediaPseudomonasSalmonellaProteusShigellaQuestion 12 of 20 13. Anaphylaxis refers to theSevere reaction following primary injection of protein solutionsSevere reaction resulting from sensitivity to common allergensSevere reaction followings the injection of protein solutions in a sensitized individualState of immunity developed by repeated injections of any foreign substanceQuestion 13 of 20 14. All of the following are potential pathogens of ororpharynx except:E.coliN. MeningitidesH. influenzaeStreptococcus pneumoniaQuestion 14 of 20 15. When horse serum is injected intravenously into a rabbit and again into the skin two or three weeks later, what is the necrotizing reaction that occurs at the site of the second injection?AtopySerum sicknessAnaphylaxisArthus phenomenonQuestion 15 of 20 16. Type I hypersensitivity is caused by:IgEIgGIgDIgAQuestion 16 of 20 17. Which of the following bacterial exotoxins converts plasminogen to plasmin?M-proteinCoagulaseStreptokinasePlasmalysinQuestion 17 of 20 18. Most common virus implicated in Severe Acute Respiratory Syndrome (SARS) isInfluenza VirusHerpes VirusPicorna VirusCorona VirusQuestion 18 of 20 19. The binding site for complement on the IgG molecule is in theCL domainCHI domainCH2 domainVL domainQuestion 19 of 20 20. The antigen-binding site of antibody molecules is localized in theFab fragmentJ- chain.constant regionFc receptorQuestion 20 of 20 Loading...