1. A protoplast is best described as a bacterial cell Uniquely sensitive to penicillin Containing a cell wall and a capsule With a cell wall but free of capsule Free of cell wall and capsule 2. Dark ground microscopy is useful to identify: Mycoplasma Chlamydiae Spirochaetes Rickettsiae 3. Leprosy bacilli can be grown in Testes of guinea pig Foot paid on nine branded armadillo Tail of guinea pig Testes of albino rats 4. Method of sterilization for fibreoptic laryngoscope: Hypochlorite Glutaraldehyde Alcohol Autoclave 5. prion – true is evokes strong immunologic reaction have long incubation period sensitive to most chemical sterilization contains DNA/RNA 6. The single most important laboratory test for determining the virulence of staphylococci is Detection of coagulase Mannitol fermentation The catalase test Hemolysis of sheep erythrocytes 7. Which of the following distinguishes viral infections from other microbial Neutrophil production Production of interferon Toxin production Lymphocyte production 8. The medium of choice for growing most fungi is Thioglycollet medium Blood Agar Sabourauds agar Tissue culture 9. H. pylori infection is seen in all except: Fundal gastritis Gastric lymphoma Duodenal ulcer Gastric carcinoma 10. True about Toxaplasma gondi is, it is carried by – Cats Dogs Cow Rats 11. The best way to sterilize an instrument soaked in AIDS virus is: Clean and autoclave with dry heat Boiling for 1 hour Moist autoclaving Dip the instrument in glutaraldehyde 12. Multiple drug resistance of bacteria depends on which of the following: Colicigenic factor (Col) Resistance transfer factor (RTF) All of above Fertility factor (F +) 13. A dark field microscope would.be useful in examining blood for Actinomyces Mycobacterium Streptococcus Treponema 14. The antigen injected for carrying the ‘Mantoux test’ is composed of : Antigen of bacteria Small amount of bacteria Killed bacteria Live attenuated bacteria 15. Ig predominant in saliva is: IgD IgM IgA IgE 16. The most common pathogens responsible for nosocomial pneumonias in the ICU are Mycoplasma. Virus infections. Gram negative organisms. Gram positive organisms. 17. One of the following is a treponemal test for diagnosis of syphilis Widal test FTAB Wasserman test Kahn test 18. Characteristic feature of retiovirus is: Ribonuclease DNA polymerase Restriction endonuclease Reverse transcriptase 19. ELISA is: A radiologic procedure A pioneer in dentistry A name of a scientist An enzymatic immune reaction 20. Moist heat kills all of the following EXCEPT: Salmonella Coxiella burnetti Mycobacterium Brucella Loading … Question 1 of 20