1. Which of the following represents the characteristic cellular infiltrate in delayed type hypersensitivity?T cells and macrophagesB cells and plasma cellsEosinophilsNeutrophilsQuestion 1 of 20 2. All of the following protozoa may be detected by Fecal Acid Fast Stain, exceptCryptosporidiumMicrosporidiaCyclosporaIsosporaQuestion 2 of 20 3. All are true relation to scrub typhus except?Transmitted when adult mites feed on hostCaused by 0. TsutsugamushiMites act as reservoirTetracycline is the drug of choiceQuestion 3 of 20 4. What will happen if a bacteria acquires genes coding for restriction endonuclease -It will have capacity to divide & multiple many timesIt will damage the host cellEnhances proof reading activity of that bacteriaBacteria will die as lacks methylaseQuestion 4 of 20 5. Organ of locomotion in bacteria isFimbriaCell wallCapsuleFlagellaQuestion 5 of 20 6. Syphilis is caused bySalmonellaFungiM. tuberculosisSpirochetesQuestion 6 of 20 7. Post streptococcal acute glomerulus nephritis is an example forType I hypersensitivityType II hypersensitivityType IV hypersensitivityType III hypersensitivityQuestion 7 of 20 8. Leprosy bacilli are transmitted from person to person by all except Through breast milkDischarge from nasal mucosaFrom open soreThrough intact skinQuestion 8 of 20 9. Infective dose of Salmonella Typhi is:One bacillus108 to 1010 bacilli102 to 105 bacilli1 to 10 bacilliQuestion 9 of 20 10. Multiple drug resistance is related MOST closely to bacterialChromosomes.Plasmids.Transduction.transformation.Question 10 of 20 11. The biologic consequences of complement activation include:Anaphylatoxin activityAll of the aboveImmune adherence and opsonisationChemotaxis of phagocytesQuestion 11 of 20 12. Each of the following represents a common opportunistic infection associated with HIV EXCEPT one Which one is this EXCEPTIONCandidiasisHairy leukoplakiaAdenovirus conjunctivitisCryptosporidium enterocolitisQuestion 12 of 20 13. The first virological marker following acute hepatitis B infection isAnti Hbe AgAnti Hbs AgHbsAgIgM Anti Hbc AgQuestion 13 of 20 14. Which of the following Immunoglobulin has the highest mean serum concentration in humans?IgAIgDIgGIgMQuestion 14 of 20 15. All of the following are true about acute infection except:Immunofluorescence is useful in detecting influenza infectionELISA is useful in Hepatitis B infectionSpecific IgM indicates rubella immune statusSpecific IgM antibody occurs in acute infectionQuestion 15 of 20 16. Adenosine deaminase deficiency is seen in the following:Severe combined immuno deficiency syndromeCommon variable immuno deficiency syndromeChronic granulomatous diseaseNezelofs syndromeQuestion 16 of 20 17. It is true regarding the normal microbial flora present on the skin and mucous membranes thatIt establishes in the body only after the neonatal period.It is absent in the stomach due to the acidic pH.The flora in the small bronchi is similar to that of the trachea.It cannot be eradicated by antimicrobial agents.Question 17 of 20 18. Sputum can be disinfected by all except:AutoclavingChlorhexidineBoilingCresolQuestion 18 of 20 19. How do you differentiate between Streptococcus and Staphylococcus infectionCatalase testBacitracin testCoagulase testOpotochin testQuestion 19 of 20 20. Group A streptococci is best diagnosed by -Catalase negativeBacitracin sensitivityBile solubilityOptochin sensitivityQuestion 20 of 20 Loading...