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Name
Reg No

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
07 THRISSUR CLUSTER
FIRST SEMESTER M.TECH. DEGREE EXAMINATION DEC 2017
Civil Engineering Department
Environmental Engineering
07CE6107 ENVIRONMENTAL MICROBIOLOGY
Time 3 hours Max.Marks: 60
Answer all six questions. Part of each question is compulsory.
Answer either part or part of each question
Q.no. Module 1 Marks
1a How do you classify microorganisms? 4
Answer b or c
b What are the applications of fungi in sanitary engineering? 5
c Explain the general characteristics of algae. 5
Q.no. Module 2 Marks
2a Explain the principle of light microscopy. 4
Answer b or c
b Describe the morphology of a bacterium with a neat figure. 5
c What is Gram stain and its significance? 5
Q.no. Module 3 Marks
3a How do you find the growth rate of a bacterium? 4
Answer b or c
b What are the factors affecting enzyme activity? Explain their effects on
metabolic reactions.
5
c What are selective and maintenance culture media? Illustrate their uses in
microbiology.
5
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Q.no. Module 4 Marks
4a Mention the latest bacteriological standards for drinking water and sources of
drinking water.
4
Answer b or c
b Describe various factors affecting activity of soil microorganisms. 5
c Explain enumeration of bacteria by plate count test. 5
Q.no. Module 5 Marks
5a Illustrate the use of microorganisms in waste utilization. 5
Answer b or c
b Explain the microbiology of activated sludge process. 7
c Describe the production process of any 3 products in industry with the use of
algae.
7
Q.no. Module 6 Marks
6a What are the different methods of sterilization? 5
Answer b or c
b Explain the role of microorganisms in Nitrogen cycle. 7
c Explain the different mode of transmission of diseases through milk. 7