LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – MEDICAL LAB TECHNOLOGY

HZ 1

SECOND SEMESTER – APRIL 2006

                                                         ML 2801 – HUMAN PATHOGENS

 

 

Date & Time : 19-04-2006/FORENOON     Dept. No.                                                       Max. : 100 Marks

Part A                                               (Answer All)                                       10 ´ 2 = 20

1. What are the general characteristics of spirochaetes and compare those characteristics with other bacteria.
2. List the virulent factors of Staphylococcus aureus.
3. Give two examples of primary cell culture and continuous culture.
4. What are virions?
5. Give the causative agents of coccidioidiomycosis, Blastomycosis
6. What are dimatiaceous fungi?
7. Differentiate amoebic and bacillary dysentery.
8. What are the characteristics of a fertilized egg of Ascaris
9. Mention any four DNA viruses
10. Write the mode of infection, portal of entry, infecting agent and site of localization of Fasciolopsis buski.

 

Part B                                          (Answer any four)                                   4 ´ 10 = 40

 

11. Explain the circumstances and events leading to gas gangrene.
12. Explain the action of Vibrio toxin and its pathogenesis.
13. Discuss the four stages of disease caused by Rabies virus in humans.
14. Enumerate the fungi causing chromomycosis. Add a note on its pathogenesis and clinical findings.
15. Give a general account of intestinal flagellates.
16. Write in detail about the life cycle of Ancylostoma duodenale.

 

Part C                                           (Answer any two)                                   2 ´ 20 = 40

17. Write an essay on the four major clinical syndromes of Salmonella.
18. Explain the two types of life cycle exhibited by phages.
19. Give a general account of Candida albicans.
20. Explain in detail the life cycle of malarial parasite in man.

 

 

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