1. Opsonization is done by: LTB4 Platelets C3b Interferon 2. A protoplast is best described as a bacterial cell Containing a cell wall and a capsule Free of cell wall and capsule With a cell wall but free of capsule Uniquely sensitive to penicillin 3. Which stage of plasmodium vivax is infective for mosquito? Trophozoite Gametocyte Ookinete Sporozoite 4. All of the following clinical features are associated with enteroviruses Herpangina Myocarditis Hemorrhagic fever Pleurodynia 5. Moist heat kills all of the following EXCEPT: Mycobacterium Brucella Coxiella burnetti Salmonella 6. Soluble components of complement system account for about 5-7 mg/ml of total serum protein 1-2 mg/ml of total serum protein 3-4 mg/ml of total serum protein 7-8 mg/ml of total serum protein 7. Bacteria used in probiotics is E. Coli Bifidobacterium Diphtheria All 8. Half-Life of free HIV in plasma is: 6 hours 12 hours 3 months 24 hours 9. Loss of capsule in bacteria is generally associated with Inability to spread through tissue Loss of Infectivity Decrease in virulence Increase in invasiveness 10. The type of immunoglobulin most commonly increased in multiple myeloma is IgG IgD IgA IgM 11. Exotoxins are: Protein compound Lipid-polysaccharide complex Lipoprotein None 12. Benzalkalonium chloride belongs to which category of disinfectants: Biguanides Essential oils Quaternary ammonium compounds Phenolic compounds 13. Bacteria with tuft of flagella at one end are called Bipolar Lophotrichate Peritrichate Monotrichate 14. Immunity that is conferred to the foetus by transfer of IgG and IgA antibodies is called as Active acquired immunity Passive natural immunity Passive acquired Immunity Natural active immunity 15. In poorly controlled Type I diabetes, most common infection is: Mucormycosis Cryptococcus Rhinosporidiasis Histoplasmosis 16. All are true about Leptospirosis except: Latent period is 10 days IgM is formed in 5 days Urine and faeces are main mode of transmission Penicillin G is drug of choice 17. Most resistant to antiseptics Prions Bacteria Spores Viruses 18. Neurotoxin of tetanus acts on Spinal Cord Muscle Brain Synapse 19. The Ig found in exocrine secretions is: IgG IgM IgD IgA 20. Actinomycetes is A yeast like form ram positive bacteria Gram negative bacteria Fungus Loading … Question 1 of 20