...

Document 1172227

by user

on
Category:

arthritis

1

views

Report

Comments

Transcript

Document 1172227
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ADV.ZOOLOGY
SIXTH SEMESTER – APRIL 2011
AZ 6600 - ENVIRONMENTAL BIOTECHNOLOGY
Date : 05-04-2011
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART A
(Answer ALL questions)
(10 x 2 = 20 Marks)
1. What is biofilm?
2. Comment on oxidation pond.
3. What are biosensors?
4. Define tricking filters.
5. What is biotransformation?
6. Define methanogenesis.
7. Comment on stabilization ponds.
8. What are xenobiotics?
9. What is PAH? Mention its applications.
10. What is phytoremediation?
PART B
(Answer any four)
(4 x 10 = 40 Marks)
11. Write short notes on production of hydrocarbons.
12. Give an account on aerobic reactors.
13. Write an account on denitrification and nitrate removal from waste water.
14. What are PCBs? Explain their role in environmental pollution.
15. Write short notes on Pseudomonas fluorescente and Rhizopus arrhizus.
16. Explain in detail biodegradation of pesticides.
PART C
(Answer any two)
(2 x 20 = 40 Marks)
17. Write notes on the oxidation ditch and sludge disposal.
18. Explain in detail on biosensors and their types.
19. Explain the design and operation of contact digester for waste water treatment.
20. Discuss the mechanisms involved in the biodegradation of toxic organics by
microbes.
$$$$$$$
Fly UP