Sbt2410:Environmental Microbiology Question Paper
Sbt2410:Environmental Microbiology
Course:Bachelor Of Crop Protection
Institution: Meru University Of Science And Technology question papers
Exam Year:2013
QUESTION ONE – 30 MARKS (a) Explain the cause and consequences of the green house effect. (5Marks) (b) Indicate three possible ways in which food may become contaminated with enteric microorganisms. (3Marks) (c) Describe the industrial importance of soil micro-organisms. (5Marks) (d) State the major functions of symbiotic association? (4Marks) (e) Explain how humans may influence the biogeochemical cycles. (3Marks) (f) Describe the methods employed by micro-organisms for uptake of nutrients. (3Marks) (g) State and explain factors to consider in selection of a chemical antimicrobial agent.(4Marks) (h) Explain why most micro-organisms are present in the upper layer of the soil. (3Marks)
QUESTION TWO – 20 MARKS Describe the various symbiotic associations that exist among bacteria. (20Marks) QUESTION THREE – 20 MARKS Write an essay on nitrogen cycle using appropriate illustrations. (20Marks) QUESTION FOUR – 20 MARKS Discuss the intrinsic and extrinsic parameters that affect microbial growth. (20Marks)
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