LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – MEDICAL LAB. TECH.

LM 06

SECOND SEMESTER – APRIL 2008

ML 2801 – HUMAN PATHOAGENS

 

 

 

Date : 17/04/2008            Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART A                                        (Answer All)                               10 ´ 2 = 20

1. Write four examples of continuous cell lines.
2. Differentiate pasteurization from flash pasteurization.
3. Define plague and bacteriophage.
4. Define quellung reaction.
5. Define two methods of virus cultivation.
6. Expand the abbreviations: PCR, LCR, LJ and RFLP.
7. Differentiate autopsy from biopsy.
8. Differentiate endotoxins from exotoxins.
9. Define babes ernst granules and cuneiform arrangement.
10. List four clinical syndromes caused by Salmonella in human beings.

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

11. Briefly describe the life cycle and laboratory diagnosis of Ascaris lumbricoides.
12. Briefly describe the life cycle and pathogenesis of Entamoeba histolytica.
13. Write a short note on clinical importance and life cycle of Trypanosoma brucei.
14. Briefly discuss the life cycle and pathogenesis of pathogen causing malaria
15. Discuss the principle, procedure, clinical significance and grading for Ziehl Neelsen staining.
16. Comment on morphology and life cycle of Wuchereria bancrofti.

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

17. What is culture medium? Give an account on types of culture media.
18. What is bacteriophage? Explain the lytic and lysogenic cycles in bacteriophage.
19. What is a virus? Describe in detail the classification of viruses.
20. Give an detailed account on life cycle and pathogenesis of Strongyloides stercoralis and Trichomonas vaginalis.

 

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