Bioc 302: Biochemical Bacteriology And Mycology Question Paper
Bioc 302: Biochemical Bacteriology And Mycology
Course:Bachelor Of Science In Biochemistry
Institution: Laikipia University question papers
Exam Year:2017
LAIKIPIA UNIVERSITY
UNIVERSITY EXAMINATIONS
2016/2017 ACADEMIC YEAR.
THIRD YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE
BIOC 302: BIOCHEMICAL BACTERIOLOGY AND MYCOLOGY
MAIN CAMPUS
STREAM: B.SC (BIOC) TIME: 2 HRS
DAY: FRI (2:30 A.M -4:30 P.M) DATE: 26/6/2017
THIS QUESTION PAPER CONSISTS OF TWO(2) PAGES. PLEASE DO NOT OPEN UNTIL THE INVIGILATOR SAYS SO.
(LAIKIPIA UNIVERSITY IS ISO 9001.2008 CERTIFIED)
VISION: A UNIVERSITY FOR VALUED TRANSFORMATION OF SOCIETY
MISSION: TO SERVE STUDENTS AND SOCIETY THROUGH RESEARCH, EDUCATION, SCHOLARSHIP, TRAINING, OUTREACH AND CONSULTANCY
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INSTRUCTIONS: ANSWER ALL QUESTIONS IN SECTION A AND ANY ONE QUESTION IN SECTION B.
SECTION A: ANSWER ALL QUESTIONS (50MKS):
1.) a.) Draw a well labelled diagram of a bacterial cell. (3mrks)
b.) Explain how microorganisms deal with toxic forms of oxygen. (3mkrs)
c.) Define Methanogenesis (2mrks)
2.) a.) Discuss the physical requirements for microbial growth. (9mrks)
b.) Discuss the chemical requirements for microbial growth. (6mrks)
3.) Outline the features of chemolithotrophy (4mrks)
4.) Explain the mechanism of action of the tetanus toxin. (4mrks)
5.) Giving specific examples of micro-organisms, describe the
formation of four products by fermentation of pyruvate. (10mrks)
SECTION B: ANSWER ANY ONE QUESTION(20MRKS)
6. Discuss the mechanisms by which microorganisms penetrate and evade the hosts defences (20mrks)
7. a.) Describe the features common to all fermentations and compare with respiration. (10mrks)
b.) Describe microbial growth in batch culture. (10mrks)
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