Bota 131: General Microbiology Question Paper

Bota 131: General Microbiology

Institution: Egerton University question papers

Exam Year:2016

UNIVERSITY EXAMINATION
REGULAR-NJORO CAMPUS
SECOND SEMESTER, 2015/2016 ACADEMIC YEAR

FIRST YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE

BOTA 131:GENERAL MICROBIOLOGY

STREAMS:BSC,AGED,BED,AQUA,BIOC,DATM,FOST,HORT,AGRO,SELUM,DRYLAND,ANSCI,ENSCI,WIEM,FORM,NARE,AGHE,ECOT,BMED

EXAMINATION SESSION:APRIL
YEAR:2016
TIME:2HRS

INSTRUCTIONS
a)Answer ALL questions in section A and any ONE in section B
b)Do not write on the question paper

Question One
Describe the four types of media usex to culture microorganisms in the laboratory. (10 Marks)

Question Two
Distinguish between the following terms
a)Aplanospores and Zoospores.
(2 Marks)
b)Antibiotic and antimicrobial agent
(2 Marks)
c)Microaerophilic and aerotolerant microorganisms. (2 Marks)
c)Florescent and phase constract microscopes. (2 Marks)
c)Tyndallization and pasteorization
(2 Marks)

Question Three
Describe the growth phases of bacteria in a batch culture.
(10 Marks)

Question Four
a)Microorganisms represent two distinctly different cell types. State the differences between these cell types. (5 Marks)
b)What are the functions of the capsule in a bacterial cell?
(5 Marks)

Question Five
a)Name and explain how sexual spores are formed in Fungi. (6 Marks)
b)List the four rules of proof of pathogenicity as outlined by Koch
(4 Marks)

SECTION B (20 MARKS)
Question Six
a)Describe the structure of a virus
b)Describe the lytic cycle of a T-even bacteriophage using a well labeled diagram. (15 Marks)

Question Seven
a)Discuss how temperature is used in microbial control. (14 Marks)
b)State the mode of action of the following microbial control agents
(6 Marks)

Bota 131: General Microbiology Question Paper

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