1. Which of the following is not used as disinfectant for skin preparation due to its irritation potential:AlcoholHexidineHexachloropropaneHypochloriteQuestion 1 of 20 2. Some bacteria get encapsulated toAchieve protection from phagocytosisTo increase penetration capacityTo produce sporesTo multiplyQuestion 2 of 20 3. Organism involved in Cysticercosis of oral cavityHook wormEchinococcus granuLosusTaenia soLiumLymphogranuloma venerumQuestion 3 of 20 4. Which of the following is false about clostridium perfringes -Food poisoning causing strains of cl. perfringes produce heat resistant SporesCl. perfringes is the most common cause of gas gangreneMost important toxin is hyaluronidaseShow positive naegler reactionQuestion 4 of 20 5. Which cellular organelle listed below contains specialized enzymes whose functions involve hydrogen peroxide?MicrobodyNucleusMitochondriaGolgi complexQuestion 5 of 20 6. Characteristic feature of retiovirus is:Restriction endonucleaseRibonucleaseDNA polymeraseReverse transcriptaseQuestion 6 of 20 7. Resistance of Staphylococcus aureus is due to:PteomorphismLack of nucleic acid in the cell wallPenicillin analogue productionElaboration of an enzyme that destroy penicillinQuestion 7 of 20 8. Staphylococci typically occurs inChainsIrregular ClustersPairsTetradsQuestion 8 of 20 9. A bacterial disease that has been associated with the 3 "Rs" i.e., rats, ricefields, and rainfall isRodent-bite fever.Plague.Melioidosis.Leptospirosis.Question 9 of 20 10. The mechanism of genetic transfer where a phage serves as a vehicle IsLysogenyConjugationTransformationTranslationQuestion 10 of 20 11. Pseudohyphae is characteristic ofCandida albicansAspergillusYeastAtternariaQuestion 11 of 20 12. Effector region of immunoglobulin isVariable region of light and heavy chainConstant region of heavy chainVariable region of heavy chainConstant region of light and heavy chainQuestion 12 of 20 13. Tuberculin test screens forCell mediated immunityPhagocyte dysfunctionHumoral immunityComplement functionQuestion 13 of 20 14. Vaccines that contain a live virus whose pathogenicity has been attenuated are used against all of the following diseases, except:MumpsMeaslesRabiesRubellaQuestion 14 of 20 15. Alcohol requires which concentration listed below to kill bacteria given sufficient time?50%-60%70%-95%30%-40%10%-20%Question 15 of 20 16. A child on administration of Penicillin developed fever, rashes, urticaria and swelling. It is due to:Ig G mediated hypersensitivityDelayed hypersensivityImmune complex cytotoxicityIg E mediated hypersensitivityQuestion 16 of 20 17. Phase contrast microscopy is based on principle ofDifferent reflective indices of objectLight scatteringDifferent refractive indices of objectLight attenuationQuestion 17 of 20 18. Moist heat kills all of the following EXCEPT:SalmonellaCoxiella burnettiBrucellaMycobacteriumQuestion 18 of 20 19. Type I hypersensitivity is mediated by which of the following immunoglobulinsIgE.IgA.IgM.IgG.Question 19 of 20 20. Most antibodies are produced in the:Spleen and the Lymph nodesThymus and the appendixBrain and the meningesHeart and the liverQuestion 20 of 20 Loading...