Download LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ZOOLOGY&PLANT BIO.&BIOTECH.
SUPPLEMENTARY EXAMINATION – JUNE 2007
CH 4202 - BIO-CHEMISTRY FOR BIOLOGIST
Date & Time: 27/06/2007 / 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART A
Answer all the questions.
10x2=20
01. Define RM value.
02. What is Liebermann Buchard test?
03. What was the contribution of Wohler to biochemistry?
04. How is proteins denatured?
05. What are the differences between amylose and amylopectin?
06. What is zwitter ion?
07. Draw the structures of citral and coniine.
08. What are mixed fertilizers? Give an example.
09. How is glucose-6-phosphate converted to fructose-6-phosphate?
10. What are essential amino acids? Give examples.
PART B
Answer any eight questions.
8x5=40
11. How is the structure of glucose elucidated?
12. Explain the factors affecting the enzymatic action.
13. Describe the importance of flavones and flavanoids.
14. How is the presence of ES complexes determined? Explain.
15. Explain the different types of soil.
16. How is N-terminal of an amino acid determined by dansyl chloride method?
17. What is competitive inhibition? Explain with an example.
18. Explain the functions of carbohydrates.
19. Explain the replication of DNA.
20. Explain the classification of proteins based on their composition with examples.
21. What is the role of humus in agriculture?
22. What are micro and macro nutrients? Explain their significance.
PART C
Answer any four questions.
4x10=40
23. Explain the structure of DNA using Chargaff’s rules and Watson and Crick model.
24. Draw and explain TCA cycle.
25. Explain the classification of phospholipids with examples.
26. Explain the primary and secondary structure of proteins.
27. What are carbohydrates? How are they classified? Give examples.
28. How are the following prepared?
a) DDT
b) superphosphate of lime
c) Potassium nitrate
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