1. Acute otitis media in children is most commonly due to: Staphylococcus aureus Steptococcus pneumonia H. Influenza M. Catarrhalis 2. Ig predominant in saliva is: IgD IgM IgE IgA 3. Exotoxins are: Protein compound Lipoprotein None Lipid-polysaccharide complex 4. Robertsons cooked meat medium is best suited for cultivation of: Clostridia S.epidermidis Mycobacterium Cholera 5. Most antibodies are produced in the: Spleen and the Lymph nodes Thymus and the appendix Brain and the meninges Heart and the liver 6. Which of the following is a true statement? Gram negative bacteria appear .red in Gram staining Gomori- Methanamine silver stains the fungus Pneumocystis jiroveci green grain positive bacteria appear black Calcalour white stains acanthamoeba red 7. The temperature required for mycobacterium 37 degree 27 degree 0 degree -2 degree 8. Bacteria used in probiotics is E. Coli Diphtheria All Bifidobacterium 9. All of the following organisms are known to survive intracellularly except: Salmonella typhi. Neisseria meningitides. Streptococcus pyogenes. Legionella pneumophila. 10. The classic opportunistic infection in acquired immune deficiency syndrome is: Apthous stomatitis Herpetic gingivostomatitis Pneumocystis carinii pneumonia Tuberculosis 11. NK CELL acts on viruses because Expression of MHC I on cell surface receptor NON Expression of MHC II on cell surface receptor Expression of MHC II on cell surface receptor Non Expression of MHC I on cell surface receptor 12. Which of the following distinguishes viral infections from other microbial Lymphocyte production Neutrophil production Production of interferon Toxin production 13. Which of the following Immunoglobulin has the highest mean serum concentration in humans? IgA IgM IgG IgD 14. The chemotactic factor is C5a C4a C2a C3b 15. Gram -ve bacteria stain during gram staining: Blue color Green Red color Colorless 16. Best method of sterilizing disposable syringes: Boiling Gamma rays Hot air oven UV rays 17. All are true regarding Donavanosis except: Causes painful ulcerative genital lesions Endemic in tropical areas Syphilis can occur concomitant with it The causative organism is Calymmatobacter granulomatis 18. Which of the following enzyme is required to induce the formation of a plasma clot by pathogenic staphylococci S-protein Coagulase Fibrinolystin Lysozymet 19. J chain is seen in which immunoglobulin: IgD IgM and IgA IgG and IgM IgE 20. Pentameric structure: IgG IgD IgM IgA Loading … Question 1 of 20
