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Autumn Examination 2008/
Exam Code(s) 2BS 2 nd^ Year Science Examination
Module Code(s) MI Module(s) Microbiology – The Microbial Cell
Paper No. 1 Repeat Paper Special Paper
External Examiner Professor Geoffrey McMullan Internal Examiner(s) Professor Vincent O’Flaherty Dr. Conor O’Byrne
Instructions: Answer 5 questions
Please indicate clearly the numbers of the questions answered on the first page of your answer book
Duration 3 Hours No. of Pages Cover page + 1 Department(s) Microbiology Course Co-ordinator(s) Dr. Conor O’Byrne Ext. 3957
Q1. Describe the structure and function of the bacterial cytoplasmic membrane.
Q2. Write essay entitled “Bacterial Cell Motility”.
Q3. Describe the process of translation in bacteria.
Q4. Write an essay entitled “Genetic Variation and Spontaneous Mutations in Bacteria”.
Q5. Microbial growth can be visualised by plotting a graph called a “growth curve”. Explain how you would plot a growth curve and how you could use it to establish the generation time (g) of a culture.
Q6. Microorganisms can be classified on the basis of their tolerance to molecular oxygen. Discuss this statement with reference to the strategies used by different microorganisms to protect themselves from the damaging effects of oxygen.
Q7. Describe in detail, the operation of the electron transport chain and associated oxidative phosphorylation in eukaryotes. Briefly comment on the differences between eukaryotic and prokaryotic processes.
Q8. Write notes on two of the following:
(a) Transport of sugars into bacterial cells. (b) Formation and function of high-energy compounds in microbial metabolism. (c) Enzyme/substrate interactions.
