Download GTU BE/B.Tech 2017 Winter 3rd Sem Old 131302 Environmental Microbiology Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-III (OLD) EXAMINATION — WINTER 2017

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Subject Code:131302 Date:21/11/2017
Subject Name: Environmental Microbiology
Time: 10:30 AM to 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q1 (a) Differentiate between Prokaryotes and Eukaryotes. 07
(b) Highlight the importance of microbiology in field of environmental Engineering. 07

Q.2 (a) Enlist and explain the different types of media used in microbiology. 07

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(b) Differentiate between Dry heat sterilization and moist heat sterilization 07
OR
(b) Write a brief note on History of microbiology. 07

Q3 (a) Draw a neat and labeled diagram of bacterial cell and enlist & explain the Internal and external parts. 07
(b) Write down the procedure for “Gram staining”. 07

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OR
(a) Write down the procedure to estimate the standard plate count of milk using serial dilution technique. 07

Q4 (a) Enlist the diseases caused by bacteria and explain the symptoms, treatment and prevention of any One in detail. 07
(b) Write a procedure for production of amino using microbes. 07

Q.4 (a) Give the classification of fungi and explain any one in detail with sketch. 07

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(b) Enlist and explain the methods of isolation of pure culture. 07

Q.5 (a) With the help of a neat sketch, explain the stages of typical bacterial growth Curve. 07
(b) What is the role of algae in environment? Explain its beneficial and harmful effects. 07
OR
(a) Give the classification of protozoa and explain any one type in detail. 07

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(b) Give the classification of viruses with respect to their shape and types. Also enlist the typical diseases caused by virus. 07

Write short notes on following chemical agents as a disinfectant 07
(1) Phenolic compounds (I1)Chlorine compounds