Microbial Biotechnology Question Paper

Microbial Biotechnology

Course:Bachelor Of Science

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2009/2010
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF
BACHELOR OF SCIENCE
(BIOCHEMISTRY AND BIOTECHNOLOGY)

SBC 316: MICROBIAL BIOTECHNOLOGY

DATE: Thursday 24th December 2009
TIME: 11.00am – 1.00pm

INSTRUCTIONS:
Section A: Attempt any 2 questions (20 Marks each)

1.
Describe the construction of a DNA library and discuss the process of

identification of a specific sequence in the library.

[20marks]

2.
a)
Differentiate between a primary metabolite and a secondary metabolite.

[6marks]

b)
Explain the biotransformation of semi synthetic penicillin and

cephalosporin.

[6marks]

c)
Using illustration, explain how recombinant microbes are produced.

[8marks]

Page 1 of 2
3. a) Bacteria
responsible for production of biofuel are classified in 4
categories.

Explain.
[10marks]

b)
Explain the role of microbes in aerobic and anaerobic digestion of waste
by
micro-organisms.

[10marks]

Section B: Answer all questions (10 Marks each)

4.
a)
What are Xenobiotic compounds?

b)
Explain the use of mixed population of microbes for Xenobiotic
degradation.

5.
How do you degrade alicyclic compounds? Explain with illustration.

6.
Explain the mechanism of action of a known microbial pesticide.
Page 2 of 2

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