1. Mycobacterium tuberculosis is differentiated from other atypical mycobacteria byPAS stainingNoneNiacin testAFB stainingQuestion 1 of 20 2. Bacteria used in probiotics isAllBifidobacteriumDiphtheriaE. ColiQuestion 2 of 20 3. Which of the following is unique to gram-negative bacteria?EndotoxinsRibosomesFlagellaCapsulesQuestion 3 of 20 4. Certain enzymes are responsible for suppuration, These enzymes derive chiefly fromSerumTissue.lymphocytes.Neutrophils.Question 4 of 20 5. The exact part of the antigen that reacts with the immune system is called asEpitopeParatopeIdiotopeCloneQuestion 5 of 20 6. Post streptococcal acute glomerulus nephritis is an example forType IV hypersensitivityType III hypersensitivityType I hypersensitivityType II hypersensitivityQuestion 6 of 20 7. Immunoglobulin crossing placenta isIgMIgAIgGIgDQuestion 7 of 20 8. Which of the following is not used as disinfectant100% Alcohol10% Chloroxylene1-2% Cetrimide2% LysolQuestion 8 of 20 9. A former from the sub-Himalayan region presents with multiple leg ulcers. The most likely causative agent is:Sporothrix SchenkiiTrichophyton RubrumC]adosporium speciesAspergillusQuestion 9 of 20 10. Multiple drug resistance is related MOST closely to bacterialtransformation.Plasmids.Transduction.Chromosomes.Question 10 of 20 11. Regarding IgE, which of the following is false?Causes anaphylaxisCross placentaFix complementImmediate reactionQuestion 11 of 20 12. Marker for chronic persistent HBV infection isHBeAgHBsAgAnti HBsAgIgM anti-HBcQuestion 12 of 20 13. Zero growth rate is observed during one of the phases of the bacterial growth curve:Exponential growthStationary phaseLagDeclineQuestion 13 of 20 14. Which one of the following statement is true regarding pathogenicity of Mycobacteria species?M. tuberculosis is more pathogenic than M. bovis to t he humansM. Africanum infection is acquired from the environmental sourceM. Marinum is responsible for tubercular lymphadenopathyM. Kansasii can cause a disease indistinguishable from tuberculosisQuestion 14 of 20 15. Antibiotic sensitivity and resistance of microorganisms is determined byELISADNA probeDirect microscopyCultureQuestion 15 of 20 16. Botulinum affects all exceptPreganglionic junctionPost ganglionic nervesNeuromuscular junctionCNSQuestion 16 of 20 17. Which of the following statements related to cross-infection is not true?viral infections are unlikely to spread during the prodromal stageblood, saliva are regarded as fomites with respect to infection transmissionDroplet nuclei less than 100 /lm in diameter are entrained in the air for many hoursprions are resistant to conventional sterilization methodsQuestion 17 of 20 18. Which of the following statements about Pneumococcus is false:Respiratory tract of carriers is most important source of infectionCapsule aids in virulenceCauses mild forms of meningitisCommonest cause of Otitis mediaQuestion 18 of 20 19. Pathogenic treponemas can be maintained in: Rabbit testis onlyArtificial mediaTissue cultureChick embryosQuestion 19 of 20 20. NK CELL acts on viruses becauseNon Expression of MHC I on cell surface receptorExpression of MHC II on cell surface receptorNON Expression of MHC II on cell surface receptorExpression of MHC I on cell surface receptorQuestion 20 of 20 Loading...
