St. Joseph’s College of Arts & Science (Autonomous) St. Joseph’s College Road, Cuddalore – 607001 MB507 – MEDICAL BACTERIOLOGY
Time : 3 hrs
Max Marks :75 SECTION – A (10X1=10) Answer ALL Questions
1. Which of the following chemical makes the medium selective for staphylococus aureus: a) 10% Sodium chloride b) 1% Sodium azide c) 1% Crystal violet d) Citric acid 2. Lancefield grouping of streptococci is based on a) M-antigen b) C-antigen c) T-antigen
d) R – antigen
3. Which of the following bacteria produces swarming on blood agar: a) E.coli b) Klebsilla c) Proteus d) Salmonella 4. Food poisoining extensively due to the consumption of fried food from Chinese restaurant is caused by a) S.typhimurium b) B.Cereus c) Cl.welchii d) S.aureus 5. Naglers reaction in cl.welchi is due to the toxin type a) Alphe b) Beta c) Delta d) Theta 6. Pertusis toxin is produced by a) B.Pertusis c) B.avium
b) B.Parapertusis d) B.bronchi septic
7. Which of the following technique is used for the demonstration of Traponemes. a) Dark ground microscopy b) Silver impregnation c) Negative staining d) All of these
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Q5/9H/04-15
8. Mycoplasma shows a) Fried egg colony c) Daisy head colony
b) Poached egg colony d) Medusa head colony
9. Following are the characteristics of Actinomycetis except a) They are Gram positive b) They are non – acid fast c) They are strict aerobes d) They are non-motile 10. Following are the characters of pseudomonas aeruginosa: a) Production of pyocyanin b) Oxidase positive c) Oxidative attack on glucose d) All of these SECTION – B (5X3=15) Answer any FIVE Questions 11. Mention any four characters of pathogenic strains of staphylococcus. 12. Write four differences between meningococci and Gonococci. 13. Enumerate the various types of diarrheaganic E.coli. 14. What is choleragen? Write briefly about it. 15. What is target haemolysis? Mention the organism showing target haemolysis: 16. Mention the groups of atypical mycobacteria classified by Remyon. Give suitable example for each. 17. Mention any four specific tests for diagnosis of syphilis?
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Q5/9H/04-15 SECTION –C (5X10=50) Answer ALL Questions 18. a) Discuss in detail the basis of lancefield grouping of streptococci. (or) b) Enumerate the virulence test for diphtheria bacillus. Write the principle of Elek’e Gel precipitation test. 19. a) What are the laboratory methods for diagnosis of typhoid fever? (or) b) Differentiate between classical cholera and El.Tor vibrio. 20. a) Mention any four solid & liquid media for cultivation of M.tuberculosis & add a note on any one concentration technique for sputum in pulmonary tuber culosis. (or) b) Mention the differences between cl.tetani and cl.welchii 21. a) Mention the complications of whooping cough: (or) b) Write briefly on the morphology, media used for cultivation & biotypes of c.diphtheria. 22. a) Write in detail the various laboatory test avaibable for the diagnosis of syphilis. (or) b) Write briefly on the medically important genera of actimomycetes with suitable examples.
Which of the following bacteria produces swarming on blood agar: a) E.coli b) Klebsilla c) Proteus d) Salmonella. 4. Food poisoining extensively due to the ...
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