LOYOLA COLLEGE (AUTONOMOUS), CHENNAI– 600 034

M.Sc. DEGREE EXAMINATION -medical laboratory technology

FIRST  SEMESTER  – NOVEMBER 2003

ML 1805 clinical  diaynostic microbiology

11.11.2003                                                                                        Max: 100 Marks

1.00 – 4.00

 

SECTION – A         

Answer ALL the questions                                                         (10 ´ 2 = 20 Marks)

 

1. What is the function of capsules and slime layers?
2. Define toxins and how is their potency expressed?
3. What are differential stains?
4. What is metachromasia?
5. What are the different kinds of media?
6. What is an enrichment medium?
7. Define sterilisation.
8. What are bactericidal and bacteriostatic agents?
9. What is sanitization?
10. Define virulence.

 SECTION – B

Answer any four of the following                                        (4 ´ 10 = 40 Marks)

 

11. Describe the composition and structure of peptidoglycan, gram positive

and gram negative cell walls.

12. Explain the structure of flagella and its distribution patterns.
13. What are the three types of nutrient broth and how will you prepare them?
14. What are disinfectants? What are the various applications of disinfectants?
15. Discuss the spread and outbreak of infections in a community.
16. Explain the infective hazards of intravenous infusion therapy.

SECTION – C

Answer any two of the following.                                         (2 ´ 20 = 40 Marks)

17. Define bacteraemia and explain on gram positive and gram

negative bacteraemia.

18. Discuss in detail the special staining methods of flagella,

capsule, spores and granules with suitable diagrams.

19. List the various physical methods of sterilisation and explain sterilisation by heat.
20. Give an account on control and prevention of hospital acquired infections.

 

 

 

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