1. The serum concentration of which of the following human IgG subclass is maximum? IgG1 IgG4 IgG2 IgG3 2. Which of the following organisms are arranged in cubical packets of eight cocci Aerococcus Sarcina Micrococcus Staphylococcus 3. For sterilization efficiency determination, the biologic standard used is: Spores of clostridium tetani Spores of harmless bacteria Streptococcus pneumonia B. Fragilis 4. Influenza is caused by Orthomyxo virus, which is a RNA virus Paramyxo virus, which is a RNA virus Paramyxo virus, which is a DNA virus Orthomyxo virus, which is a DNA virus 5. With reference to Bacteroides fragilis the following statement are true except? The lipo polysaccharide formed by B.Fragilis is structurally and functionally different from the conventional endotoxin B.Fragilis is not uniformly sensitive to metronidazole Shock and DIC are common in Bacteroides bacteremia B.Fragilis is the most frequent anaerobe isolated from clinical samples 6. Which of the following is an enrichment medium? Nutrient Broth Selenite F Broth Mac Conkey agar Blood agar 7. Filters used in biological safety cabinets: Berkfield filter Seitz filter Millipore filter High efficiency particulate (HEPA) filter 8. The mechanism by which most fungi cause disease Lecithinase production Coagulase production Hypersensitivity Exotoxin production 9. Opsonization is done by: Platelets LTB4 Interferon C3b 10. Tuberculin test screens for Phagocyte dysfunction Complement function Cell mediated immunity Humoral immunity 11. Actinomycosis is caused by: Retrovirus cid fast. Non-motile bacillus Anaerobic, gram positive, non-acid fast bacteria. Fungus 12. Both intranulear and intracytoplasmic inclusions are present in which of the following viruses Pox Virus Hepatitis B virus HIV Measles virus 13. Australian antigen is associated with: AIDS Chronic leukemia Basal cell carcinoma Hepatitis B surface antigen in acute hepatitis 14. Phase contrast microscopy is based on Light scatter Different reflective index Light attenuation Different refractive index B 15. Anaphylaxis refers to the State of immunity developed by repeated injections of any foreign substance Severe reaction resulting from sensitivity to common allergens Severe reaction following primary injection of protein solutions Severe reaction followings the injection of protein solutions in a sensitized individual 16. The genetic ability of a bacterium to grow in the presence of several antibiotics is passed from one bacterium to other by Conjugation Rarefaction Transduction Transformation 17. Growth factor needed for Salmonella Citrate B-12 Niacin Tryptophan 18. Which one of the following statement is true regarding pathogenicity of Mycobacteria species? M. Kansasii can cause a disease indistinguishable from tuberculosis M. Africanum infection is acquired from the environmental source M. Marinum is responsible for tubercular lymphadenopathy M. tuberculosis is more pathogenic than M. bovis to t he humans 19. In penicillin allergy, penicillin acts as a: Hapten Carrier Toxin Super antigen 20. Which of the following is true about streptococcus pneumoniae: Gram -ve diplococcic Gram +ve Lanceolate diplococci Extracellular grain -ve diplococcic Gram +ve coccobacilli Loading … Question 1 of 20
