Download LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ADV. ZOO.& PLA.BIO.&BIOTEC.
FOURTH SEMESTER – APRIL 2007
LM 10
CH 4202 - BIO-CHEMISTRY FOR BIOLOGIST
Date & Time: 19/04/2007 / 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART A
Answer all the questions.
10x2=20
01. What was the contribution of James B Sumner to biochemistry?
02. What is feedback inhibition? Give an example.
03. Mention the uses of glycogen.
04. Explain isoelectric point.
05. Draw the structure of cholesterol.
06. What are the differences between DNA and RNA?
07. Convert fructose into glucose.
08. Define iodine value.
09. Draw the structures of camphor and nicotine.
10. What are essential fatty acids? Give examples.
PART B
Answer any eight questions.
8x5=40
11. How is the structure of fructose elucidated?
12. Explain the factors influencing the enzymatic action.
13. Describe the importance of macro and micronutrients.
14. What are cephalins and plasmalogens? Explain.
15. Explain the different types of soil.
16. How are alkaloids isolated?
17. Explain the replication of DNA.
18. What is Line Weaver Burk plot? Mention its significance.
19. Explain the classification of terpenes.
20. Explain the mechanism of enzymatic action.
21. Explain the secondary structure of proteins.
22. How is the structure of DNA explained by Watson and Crick model?
PART C
Answer any four questions.
4x10=40
23. Draw and explain the structure of t-RNA.
24. Describe the importance and uses of anthocyanines, flavones and flavanoids.
25. Explain the enzymatic inhibition with examples.
26. How is N-terminal of an amino acid determined by Edman and Sanger’s method?
27. How is glucose converted to pyruvate? Explain.
28. Explain the classification of enzymes with their functions and examples.