LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – MEDICAL LAB TECHNOLOGY
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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
- What are the general characteristics of spirochaetes and compare those characteristics with other bacteria.
- List the virulent factors of Staphylococcus aureus.
- Give two examples of primary cell culture and continuous culture.
- What are virions?
- Give the causative agents of coccidioidiomycosis, Blastomycosis
- What are dimatiaceous fungi?
- Differentiate amoebic and bacillary dysentery.
- What are the characteristics of a fertilized egg of Ascaris
- Mention any four DNA viruses
- 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
- Explain the circumstances and events leading to gas gangrene.
- Explain the action of Vibrio toxin and its pathogenesis.
- Discuss the four stages of disease caused by Rabies virus in humans.
- Enumerate the fungi causing chromomycosis. Add a note on its pathogenesis and clinical findings.
- Give a general account of intestinal flagellates.
- Write in detail about the life cycle of Ancylostoma duodenale.
Part C (Answer any two) 2 ´ 20 = 40
- Write an essay on the four major clinical syndromes of Salmonella.
- Explain the two types of life cycle exhibited by phages.
- Give a general account of Candida albicans.
- Explain in detail the life cycle of malarial parasite in man.
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