Seat No.:
Enrolment No.
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-IV(NEW) —- EXAMINATION - SUMMER 2019
Subject Code:2143503 Date:17/05/2019
Subject Name: Environmental Bioscience
Time:02:30 PM TO 05:00 PM Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
MARKS
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Q.1 (a) Define Environmental Microbiology. Enlist its application in environmental Engineering. 03
(b) Discuss historical aspects of microbiology. 04
(c) Define Nutrient agar & broth. Discuss the procedure to prepare Nutrient agar with all requirement in laboratory. 07
Q.2 (a) Define: Cells, Eukaryotes, Aerobic bacteria 03
(b) Introduce Protozoa. Describe its role in environment. 04
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(c) Briefly discuss microbial growth curve with suitable diagram. 07
OR
(c) Describe the classification of microorganism. 07
Q.3 (a) Write down the function cell membrane and ER. 03
(b) Explain pour plate method with suitable diagram. 04
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(c) Classify bacteria on the basis of shape & its growth requirements. 07
OR
Q.3 (a) Write down the function ribosomes and mitochondria. 03
(b) Explain streak plate method with suitable diagram. 04
(c) Define Culture media. Briefly discuss its classification. 07
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Q.4 (a) Explain the procedure of Autoclaving. 03
(b) Introduce aerobic metabolism with its functions. 04
(c) What are the characteristics of Algae? Describe the classification of Algae. 07
OR
Q.4 (a) Introduce amino acid with its general structure. 03
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(b) Explain the structure of proteins. 04
(c) Briefly describe microbial flora of soil. 07
Q.5 (a) Introduce nucleus with it functions. 03
(b) Write a short note on Microbiology of air. 04
(c) What is Microbial ecosystem? Briefly discuss positive association among soil microorganism. 07
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OR
Q.5 (a) Write a short note on Enzymes. 03
(b) Introduce carbohydrate. Enlist its functions. 04
(c) What do you understand by biogeochemical cycle? Explain Nitrogen cycle with suitable diagram. 07
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