OLLSCOIL NA hEIREANN,
GAILLIMH
AUTUMN EXAMINATIONS 1999
SECOND SCIENCE
MICROBIOLOGY
FIRST PAPER
EXTERN EXAMINER Professor J Smith
INTERN EXAMINER Internal Examiners
TIME ALLOWED: 3 hours
ANSWER FIVE QUESTIONS
(INDICATE CLEARLY THE QUESTIONS ANSWERED ON THE FIRST
PAGE OF YOUR ANSWER BOOK)
1.
4.
5.
2.
3.
6.
Write an essay describing the genetic information flow-plan found in the bacterial cell.
Write an essay titled "Gene transfer among bacteria".
Compare and contrast the Procaryotic and Eucaryotic cell types.
Write an essay on bacterial endospores.
Gaseous atmosphere influences microbial growth. Discuss.
Write notes on the determination of microbial cell numbers using: (i) turbidimetric measurements, and (ii) microbial metabolic activity measurements. Include diagrams where appropriate.

7.
8.
Describe in detail, the operation of of the electron transport chain and associated oxidative phosphorylation in eukaryotes. Briefly comment on the differences between eukaryotic and prokaryotic processes.
Write notes on two of the following:
(i) Transport of sugars into bacterial cells.
(ii) Formation and function of high-energy compounds in microbial metabolism.
(iii) Enzyme/ substrate interactions.