1. Graft versus host reaction is caused by T-lymphocytes B-lymphocytes Monocytes Leukocytes 2. In poorly controlled Type I diabetes, most common infection is: Mucormycosis Histoplasmosis Cryptococcus Rhinosporidiasis 3. Endotoxins have all but one of the properties given below: Cannot be toxoided Not secreted outside the cell Produced by gram positive bacteria Produced by gram negative bacteria 4. A child on administration of Penicillin developed fever, rashes, urticaria and swelling. It is due to: Delayed hypersensivity Immune complex cytotoxicity Ig E mediated hypersensitivity Ig G mediated hypersensitivity 5. Which of the following distinguishes viral infections from other microbial Toxin production Lymphocyte production Neutrophil production Production of interferon 6. Regarding leptospirosis all are true except: Lice act as reservoirs of disease It is a zoonosis Humans are the end hosts Humans are accidental hosts of the disease 7. All of the following infections may be transmitted by dental instruments except Hepatitis C Hepatitis E Hepatitis B HIV 8. The property of splitting sugars by bacteria is called: Saprophytic Saccharolytic Virulence Toxogenic 9. An example of naturally acquired passive immunity is: Tetanus immunization Gamma globulin injection Immune blood transfusion Placentral transfer of antibodies 10. Positive Shick’s test indicates that person is Carrier of diptheria Immune to diphtheria hypersensitive to diphtheria Susceptible to diphtheria 11. All of the following are true regarding chlamydia trachomatis except: Inside the cell it evades phagolysosome It has a bipha’sic life Elementary body is metabolically active Reticulate body divides by binary fission 12. Acute otitis media in children is most commonly due to: Staphylococcus aureus Steptococcus pneumonia H. Influenza M. Catarrhalis 13. Dark ground microscopy is useful to identify: Mycoplasma Rickettsiae Spirochaetes Chlamydiae 14. Toxoids are antigenic and non-toxic non-antigenic and non-toxic antigenic and toxic non-antigenic and toxic 15. Ig predominant in saliva is: IgA IgM IgE IgD 16. Hemolytic Streptococci can cause serious cross infections in hospital settings. These bacteria usually harbor which site in health workers working in the hospitals: Nails Skin Hair Throat 17. Adenosine deaminase deficiency is seen in the following: Common variable immuno deficiency syndrome Chronic granulomatous disease Severe combined immuno deficiency syndrome Nezelofs syndrome 18. Lance field grouping of streptococci is based on: Carbohydrate C antigen Lipopolysaccharide capsule Cell wall peptidoglycan M protein 19. Silver Impregnation method of staining is useful to demonstrate Spirochetes None of the above Both of the above Bacterial flagella 20. Which of the following is not a role of immunoglobulin G (IgG): Helps in opsonisation Neutralizes bacterial toxins Crosses placenta Prominent in primary immune response Loading … Question 1 of 20
