Ollscoil na hÉireann, Gaillimh
National University of Ireland, Galway
Semester I Examinations, 2006/2007
Exam Code(s)
2BS1
2nd Year Science Examination
Module Code(s)
Module(s)
MI211
Microbiology – The Microbial Cell
Paper No.
Repeat Paper
1
Special Paper
External Examiner(s)
Internal Examiner(s)
Professor Geoffrey McMullan
Professor Peter Smith
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
No. of Pages
Department(s)
Course Co-ordinator(s)
3 Hours
Cover page + 1
Microbiology
Dr. Conor O’Byrne Ext. 3957
Q1.
Write an essay on “Bacterial cytoplasmic membranes”.
Q2.
Compare and contrast Gram-positive and Gram-negative peptidoglycan.
Q3.
Describe the process of translation initiation in bacteria and the molecules
involved in this process.
Q4.
Write an essay outlining two types of genetic variation that occur in bacteria.
Q5.
Describe the differences between “complex” and “chemically defined”
microbiological growth media. Give examples of each and indicate why each
component is included in the medium.
Q6.
Microorganisms can be classified on the basis of their tolerance to molecular
oxygen. Discuss this statement and describe how you might determine the oxygen
tolerance of a newly isolated microorganism.
Q7.
Compare and contrast homolactic and heterolactic fermentation pathways.
Q8.
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.