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MSP811S - MICROBIAL SYSTEMATICS AND PROCESSES - 1ST OPP - JUNE 2023 |
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nAmlBIA UnlVERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTY OF HEALTH, NATURAL RESOURCESAND APPLIED SCIENCES
SCHOOL OF NATURAL AND APPLIED SCIENCES
DEPARTMENT OF BIOLOGY, CHEMISTRY AND PHYSICS
QUALIFICATION : BACHELOR OF SCIENCE (HONOURS)
QUALIFICATION CODE: 08BOSC
LEVEL: 8
COURSE CODE: MSP811S
COURSE NAME: MICROBIAL SYSTEMATICSAND PROCESSES
SESSION: JUNE 2023
DURATION: 3 HOURS
PAPER: THEORY
MARKS: 120
EXAMINER(S)
MODERATOR:
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
Prof Percy Chimwamurombe
Dr Jean-Damascene Uzabakiriho
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLEMATERIALS
Non-programmable Calculators
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ATTACHMENTS
None
THIS QUESTION PAPER CONSISTS OF 2 PAGES (Including this front page)
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Section A:
[60 marks]
1. Why is Carl Woese an important figure in microbial classification and taxonomy? (5 marks)
2. What is the GC content of the molecule below?
(5 marks)
-CAAAAAGAAAAAAGCCAACCAAGGGCAAAAACGGCCACGA-
3. Explain why the presence of many Archaea has only been confirmed by community sampling
of rRNA genes and not by culture in the laboratory.
(5 marks)
4. When a new organism is described, certain procedures take place before its name and
description become "official." Explain this process.
(5 marks)
5. Explain the defining features of Enteric bacteria.
(5 marks)
6. Explain how Wolbachia and Bacillus thuringiensis might be used as natural insecticides
against arthropods and insects, respectively.
(5 marks)
7. Why does Archaeoglobus represent a metabolically transitional type of organism
that bridged the energy generating processes of S production and methanogenesis?
(5 marks)
8. Compare and contrast Pyrodictium and Pyrolobus.
(5 marks)
9. Explain why Nanoarchaeum is classified as a cell rather than a non-cell.
(5 marks)
10. Where is the thermosome found and what is its apparent role?
(5 marks)
11. Speculate on the possibility of life on other planets.
(5 marks)
12. Why can multiple phylogenetic probes be used on a single sample?
(5 marks)
Section B {Essays):
[60 marks]
1. "We only know about 5-10% of the bacteria out there". Comment on this
statement in an essay highlighting the technological challenges in generating
data to name new bacteria microbes.
2. Describe the diversity in the Proteobacteria.
{30 marks)
(30 marks)
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