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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:2011

QUESTION ONE – (30 MARKS)
a) With relevant examples outline four beneficial applications of fungi. (4 Marks) b) What advantage does the phase-contrast microscope have over the ordinary bright field microscope? (4 Marks) c) Describe the Koch’s postulates. (5 Marks) d) Differentiate budding yeast from fission yeast. (4 Marks) e) Explain the difference between selective and differential media. (2 Marks) f) List and describe four types of spores formed on conidiophores of filamentous fungi. (4 Marks) g) Briefly describe the viral replication cycle. (5 Marks) h) Define an antibiotic. (2 Marks)
QUESTION TWO (20 MARKS)
a) Define the “aseptic technique” concept in microbiology and explain three ways in which it can be accomplished. (8 Marks) b) State the two different versions of mold mycelium and describe their roles. (6 Marks) c) Discuss three groups of protozoa that are pathogenic to animals. (6 Marks)
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QUESTION THREE (20 MARKS)
a) Discuss the classification of bacteria based on their preferred temperature range. (8 Marks) b) Describe five requirements that a general purpose enumeration media for fungi should possess. (10 Marks) c) Citing an example describe dimorphic fungi. (2 Marks)
QUESTION FOUR (20 MARKS)
a) Citing relevant examples, describe the three phyla into which fungi is organized, based on the type of sexual spore. (15 Marks) b) Name two commercially important divisions of algae and give examples of the useful by- products. (4 Marks) c) Explain why an enveloped virus is more vulnerable than a capsid coated virus. (1 Mark)
QUESTION FIVE (20 MARKS)
a) With the aid of a well labeled diagram describe the bacterial growth curve in a substrate. (10 Marks) b) Describe three techniques of maintaining pure microbial cultures. (6 Marks) c) Discuss the limitations of viable count procedures in enumeration of microorganisms. (4 Marks)

Sbt2102:General Microbiology Question Paper

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