Section A:
[60 marks]
1. When a new organism is described, certain procedures take place before its
name and description become "official." Explain this process.
(5 marks)
2. Explain the defining features of Enteric bacteria.
(5 marks)
3. Explain how Wolbachia and Bacillus thuringiensis might be used as natural
insecticides against arthropods and insects, respectively.
(5 marks)
4. Archaeoglobus represent a metabolically transitional type of organism
that bridged the energy generating processes of Sulfur (S) production and
methanogenesis. Briefly explain?
(5 marks)
Compare and contrast Pyrodictium and Pyrolobus.
(5 marks)
Locate where the thermosome is found and explain its apparent role.
(5 marks)
Speculate on the possibility of life on other planets.
(5 marks)
Briefly discuss why Carl Woese is an important figure in microbial classification and
taxonomy?
(5 marks)
9. Determine the GC content of the molecule below?
(5 marks)
-CAAAAAGAAAAAAGCCAACCAAGGGCAAAAACGGCCACGA-
10. Multiple phylogenetic probes can be used on a single sample. Explain.
11. Explain why the presence of many Archaea has only been confirmed by
community sampling of rRNA genes and not by culture in the laboratory.
12. Explain why Nanoarchaeum is classified as a cell rather than a non-cell.
(5 marks)
(5 marks)
(5 marks)
Section B (Essays):
[60 marks]
1. Describe the diversity in the Proteobacteria.
2. “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.
(30 marks)
(30 marks)
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