1. Which of the following is not used as disinfectant 10% Chloroxylene 1-2% Cetrimide 2% Lysol 100% Alcohol 2. What is the transport medium for cholera Calyblairmedium B&C Venkatramari – Ramaknshrian Medium Tellurfte Medium 3. Immunoglobulin crossing placenta is IgG IgD IgM IgA 4. The following immunoglobulin is not known to fix complement IgG IgE IgA IgM 5. According to Koch’s postulates, a causative agent must satisfy all of the following criteria except Bacteria should be able to be isolate s from diseased tissue Bacteria should be able to grow in pure culture from the lesions Bacteria should be able to be isolated from diseased tissue in experimental animals Bacteria may or may not cause disease in experimental animals 6. The single most important laboratory test for determining the virulence of staphylococci is Mannitol fermentation Detection of coagulase Hemolysis of sheep erythrocytes The catalase test 7. Which of the following is an acid-fast bacillus Neisseria gonorrhoea ALL of the above Treponema pallidum Mycobacterium bacilli 8. Phase contrast microscopy is based on Different refractive index B Different reflective index Light attenuation Light scatter 9. Which of the following is not used as disinfectant for skin preparation due to its irritation potential: Hypochlorite Alcohol Hexidine Hexachloropropane 10. Viruses can be isolated from clinical samples by cultivation in the following except Chemically defined media. Tissue culture. Embryonated eggs. Animals. 11. Antibiotic sensitivity and resistance of microorganisms is determined by Direct microscopy DNA probe Culture ELISA 12. First organism to appear in oral cavity: Strept. Salivarious Lactobacilli Strept. Mutans Streptococcus sanguis 13. Bacteria with tuft of flagella at one end are called Peritrichate Bipolar Monotrichate Lophotrichate 14. Chlamydia causes all of the following except Pneumonia Parotitis Trachoma Mon-gonococcal urethritis 15. Loss of capsule in bacteria is generally associated with Increase in invasiveness Decrease in virulence Inability to spread through tissue Loss of Infectivity 16. The Ig found in exocrine secretions is: IgA IgG IgM IgD 17. All of the following are potential pathogens of ororpharynx except: E.coli H. influenzae Streptococcus pneumonia N. Meningitides 18. Hemolytic Streptococci can cause serious cross infections in hospital settings. These bacteria usually harbor which site in health workers working in the hospitals: Skin Throat Nails Hair 19. The antigen injected for carrying the ‘Mantoux test’ is composed of : Live attenuated bacteria Small amount of bacteria Antigen of bacteria Killed bacteria 20. The type of immunoglobulin most commonly increased in multiple myeloma is IgG IgD IgM IgA Loading … Question 1 of 20
