OLLSCOIL NA hEIREANN, GAILLIMH
NATIONAL UNIVERSITY OF IRELAND, GALWAY
SEMESTER TWO EXAMINATION
AUTUMN 2000
SECOND SCIENCE
MICROBIOLOGY
EXTERN EXAMINER Professor C M Brown
INTERN EXAMINER Internal Examiners
TIME ALLOWED: 3 hours
ANSWER QUESTION 1 AND FOUR OTHER QUESTIONS.
(INDICATE CLEARLY THE QUESTIONS ANSWERED ON THE FIRST
PAGE OF YOUR ANSWER BOOK)
1.
Describe the properties of any three sections of bacteria found within
Bergey's Manual of Systematic Bacteriology.
2.
Phenetic classification is an information-rich method of bacterial
classification. Discuss.
3.
Describe how DNA-based methods can prove useful tools for the
study of bacterial ecology.
4.
Describe the conditions required for biological decomposition to occur
in nature.
5.
Write notes on both: (a) Herpes virus, and (b) Poliovirus.
6.
Discuss the use of isotope tracers for the estimation of microbial
activity in natural environments.
OR
Compare and contrast the role of micro-organisms in aquatic
ecosystems to that in terrestrial ecosystems.
7.
Write an essay on the role of microbiologists in the provision of pure
drinking water.