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Environmental Biochemistry Ii Question Paper

Environmental Biochemistry Ii

Course:Bachelor Of Science In Environmental Health

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY

UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
OF SCIENCE (ENVIRONMENTAL HEALTH)

HEH 208:
ENVIRONMENTAL BIOCHEMISTRY II

DATE: WEDNESDAY 1ST APRIL 2009 TIME: 8.00 A.M. – 10.00 A.M.

INSTRUCTIONS:
SECTION 1
• Answer ALL Questions
1.
a)
Explain the following concepts.

i)
Bioconcentration
(5
marks)
ii)
Biosensors
(5
marks)
iii)
Mycoremediaton
(5
marks)

b)
Using N- octane as an example, illustrate the biodegradation of hydrocarbons.

(5 marks)
SECTION II
• This has two parts.
• Answer all questions in part 1, and any 2 in part II

PART I
(20 marks)
2.
a)
Explain the importance of biotransformation.

(6 marks)
b)
Phase I reactions are generally reactions which modify a xenobiotic
compound by adding a functional group. Describe citing relevant
examples.
(14
marks)

PART II
(30 MARKS)
3.
Discuss the classification, design, engineering and control of bioreactors.

(15 marks)
4.
Methanogenesis is an example of organic waste decomposition. Discuss.
(15 marks)
5.
Describe the sources of industrial waste water.

(15 marks)
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