1. The antigen-binding site of antibody molecules is localized in theconstant regionJ- chain.Fc receptorFab fragmentQuestion 1 of 20 2. All of the following clinical features are associated with enteroviruses Hemorrhagic feverMyocarditisHerpanginaPleurodyniaQuestion 2 of 20 3. Gram -ve bacteria stain during gram staining:Red colorGreenColorlessBlue colorQuestion 3 of 20 4. Fungus affecting reticular endothelial systemRhizopusMucormycosisHistioplasma capsulatumCryptococcus neoformansQuestion 4 of 20 5. Most sensitive test for Treponema -KahnVDRLRPRFTA-ABSQuestion 5 of 20 6. Which cellular organelle listed below contains specialized enzymes whose functions involve hydrogen peroxide?NucleusGolgi complexMicrobodyMitochondriaQuestion 6 of 20 7. Which of the following is a true statement?grain positive bacteria appear blackGram negative bacteria appear .red in Gram stainingGomori- Methanamine silver stains the fungus Pneumocystis jiroveci greenCalcalour white stains acanthamoeba redQuestion 7 of 20 8. 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 8 of 20 9. Graft versus host reaction is caused byLeukocytesB-lymphocytesT-lymphocytesMonocytesQuestion 9 of 20 10. The mechanism by which most fungi cause diseaseLecithinase productionHypersensitivityCoagulase productionExotoxin productionQuestion 10 of 20 11. Best method to disinfect delicate instruments as endoscope, cystoscopes and metallic instrument is byChemical vapourFiltrationInfrared radiationEthylene gasQuestion 11 of 20 12. For sterilization efficiency determination, the biologic standard used is:Streptococcus pneumoniaB. FragilisSpores of clostridium tetaniSpores of harmless bacteriaQuestion 12 of 20 13. True about mycobacterium other than tubercular bacilli:Cause decreased efficacy of BCG due to cross immunityPerson to person transmission is seenCauses disseminated infectionOccurs in persons with normal immunityQuestion 13 of 20 14. A former from the sub-Himalayan region presents with multiple leg ulcers. The most likely causative agent is:Sporothrix SchenkiiC]adosporium speciesAspergillusTrichophyton RubrumQuestion 14 of 20 15. Epstein Barr virus causes autoimmunity by:Molecular MimicryPolyclonal B cell ActivationRelease of Sequestrated AntigenInappropriate Expression of MHC Class II MoleculesQuestion 15 of 20 16. One of the following is a treponemal test for diagnosis of syphilisWidal testWasserman testKahn testFTABQuestion 16 of 20 17. Hepatitis E virus causes which of the following:Acute liver failureCirrhosis of liverChronic renal failureChronic liver diseaseQuestion 17 of 20 18. Silver Impregnation method of staining is useful to demonstrateNone of the aboveSpirochetesBoth of the aboveBacterial flagellaQuestion 18 of 20 19. Pleoniorphic' shape of bacteria signifies:Long rods shaped bacteriaIrregular clusters of bacteriaNon specific shapeDumb-bell shaped bacteriaQuestion 19 of 20 20. Which of the following chemical agents has the broadest antimicrobial spectrum of activity?GlutaraldehydeEthanolPhenolLsopropanolQuestion 20 of 20 Loading...