1. All of the following protozoa may be detected by Fecal Acid Fast Stain, exceptCyclosporaCryptosporidiumMicrosporidiaIsosporaQuestion 1 of 20 2. Anaerobic bacteria can be cultured inLoefflers mediumL-J mediumSabourauds agarRobertson cooked meat mediumQuestion 2 of 20 3. Phage conversion is required for:TularemiaAll of the aboveDiphtheriaGonorrhoeaQuestion 3 of 20 4. Gram stained periorbital exudates in severe panophthalmitis with cellulitis in an elderly diabetic shows irregular branching aseptate and broad hyphae. Which of the following is the most likely diagnosis:CandidaPenci]liumAspergillusApophysomyces spQuestion 4 of 20 5. Type I hypersensitivity is caused by:IgAIgGIgDIgEQuestion 5 of 20 6. Most common virus implicated in Severe Acute Respiratory Syndrome (SARS) isCorona VirusHerpes VirusPicorna VirusInfluenza VirusQuestion 6 of 20 7. According to Koch's postulates, a causative agent must satisfy all of the following criteria exceptBacteria should be able to be isolated from diseased tissue in experimental animalsBacteria should be able to grow in pure culture from the lesionsBacteria may or may not cause disease in experimental animalsBacteria should be able to be isolate s from diseased tissueQuestion 7 of 20 8. All of the following statements about carbohydrate antigens are true, exceptGood memory responsePolyclonal responseT cell independent immunityPoor immunogenicityQuestion 8 of 20 9. Group A streptococci is best diagnosed by -Bile solubilityBacitracin sensitivityCatalase negativeOptochin sensitivityQuestion 9 of 20 10. Which of the following is false about clostridium perfringes -Most important toxin is hyaluronidaseFood poisoning causing strains of cl. perfringes produce heat resistant SporesShow positive naegler reactionCl. perfringes is the most common cause of gas gangreneQuestion 10 of 20 11. Which cells listed below help to assist other T cells and B cells to express their immune functions?T suppressor cellsT helper cellsCytotoxic (killer) T cellsPlasma cellsQuestion 11 of 20 12. NK CELL acts on viruses becauseNon Expression of MHC I on cell surface receptorExpression of MHC I on cell surface receptorNON Expression of MHC II on cell surface receptorExpression of MHC II on cell surface receptorQuestion 12 of 20 13. Which term listed below is an interactive association between two populations of different species living together in which one population benefits from the association, while the other is not affected?SymbiosisMutualismLatencyCommensalismQuestion 13 of 20 14. All of the following statements about Pathogenesis of clostridium difficile associated pseudomembranous enterocolitis are true, exceptToxin A is more potent than Toxin BToxin B is a CytotoxinToxin A is an EnterotoxinExotoxin MediatedQuestion 14 of 20 15. A deficiency in which of the following cells can predispose to candidiasis?T lymphocytesABasophilsMacrophagesEosinophilsQuestion 15 of 20 16. Actinomycosis is caused by:cid fast. Non-motile bacillusFungusRetrovirusAnaerobic, gram positive, non-acid fast bacteria.Question 16 of 20 17. Adjuvant given along with antigens are going toincrease antigenicityreduce the toxigenicityincrease toxigenicityreduce the antigenicityQuestion 17 of 20 18. What is sterilization?Destroying all organism except sporesDeactivate the spores and only pathogenic organismDestroying all organism in a given environmentKills all pathogenic organismQuestion 18 of 20 19. Which of the following is the MOST important function of bacterial pill in causing human infectious disease?Making the bacteria motileAllowing bacteria to adhere to human cellsTransferring DNA from one bacterium to anotherDestroying phagocytic macrophages and neutrophilsQuestion 19 of 20 20. Diagnostic of Rabies -Negri bodiesCowdry A bodyBollinger bodiesGuarneri bodiesQuestion 20 of 20 Loading...
