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Sbt2102:General Microbiology Question Paper

Sbt2102:General Microbiology

Course:Bachelor Of Horticulture

Institution: Meru University Of Science And Technology question papers

Exam Year:2013

QUESTION ONE (30 MARKS)
a) Draw the bacterial shapes listed in i, ii, iii and explain how iv and v are special conditions of b and c respectively. (5 Marks) i. Spiral ii. Bacillus iii. Coccus iv. Streptobacilli v. Staphylococci b) How does an open culture system differ from a batch culture? (3 Marks) c) What are the mechanisms by which antibiotics inhibit growth of bacteria? (3 Marks) d) Why are the Grams stain technique known as differential technique? (3 Marks) e) Explain differential media giving one example. (3 Marks) f) Differentiate between flagella and pili in terms of form and functions. (3 Marks) g) Why is microbial control necessary? Mention any two factors that determine the choice of a particular antimicrobial chemical agent. (4 Marks) h) Giving examples, differentiate between nosocomial and zoonotic infectious/diseases. (4 Marks) i) Name one fungal and one viral disease of the plant and the causative agent. (2 Marks)
QUESTION TWO (20 MARKS)
a) Draw a typical bacterial cell and describe any of its four organelles. (10 Marks)
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b) Describe the phases of bacterial growth curve in a closed system and their causes. (10 Marks)
QUESTION THREE (20 MARKS)
Discuss at least four physical methods of microbial control.
QUESTION FOUR (20 MARKS)
State and explain uses of microbials, giving examples in each category.
QUESTION FIVE (20 MARKS)
Describe the symptoms, control and prevention of any named fungal plant disease.

Sbt2102:General Microbiology Question Paper

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