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Environmental And Human Health Question Paper

Environmental And Human Health 

Course:Bachelor Of Environmental Studies

Institution: Kenyatta University question papers

Exam Year:2009



KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
ENVIRONMENTAL SCIENCE
ENS 313: ENVIRONMENTAL AND HUMAN HEALTH

DATE: FRIDAY, 21ST AUGUST 2009 TIME: 11.00 A.M. – 1.00 P.M.

INSTRUCTIONS: Answer Question ONE and any other THREE questions.

1.
(a)
Briefly describe the life cycles of the following parasites and give their
control methods:
i)
Ascaris lumbricoides




(7 marks)
ii)
Filaria worm (wulchereria bancrofti)
(7
marks)
iii)
Tsetse fly (Glossina spp)
(7
marks)
(b)
Explain why you should have a knowledge of parasites life history and
behaviour.
(4
marks)

2.
Discuss strategies for, and challenges of controlling malaria in Kenya.
(15 marks)

3.
(a)
Define immunity and explain how it develops in the body and in a
community.






(5 marks)
(b)
Give an account of environmental conditions that promote
cholera.







(10 marks)

4.
Use a diagram to illustrate the life cycle of schistosomiasis and explain the
epidemiology
of
the
disease.
(15
marks)

5.
Give an account of factors that determine the health of a community.
(15 marks)

*******************
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