M.Sc. DEGREE EXAMINATION, APRIL 2018
Second Semester
Biochemistry
CELL BIOLOGY
(CBCS 2017 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 X 2 20)
Answer all questions.
1. Define action potential.
2. What is a synapse?
3. What are Transport vesicles?
4. Equation for light dependent reaction of photosynthesis.
5. What is the significance of histone protein?
6. What are supranucleosomal structures?
7. G1 phase of cell cycle.
8. What is fluid mosaic model?
9. What are the ligands which trigger the TGF beta
signalling pathway?
10. Expand JAK-STAT.
Sub. Code
7MBC2C1
AFS-0591
2
WS3
Part B X 5 25)
Answer all questions, choosing either or
11. Discuss on the structure and functions of gap
junctions.
Or
Describe the role of glycoconjugates and proteins in
membranes.
12. Explain the process of electron transport chain.
Or
Elaborate on the salient features of lysosomes.
13. What are polytene chromosomes? Write a note on
its structure and Function.
Or
Write a detailed note on the oxidative reactions in
microbodies.
14. What are the types of cell fusion? Explain its
applications.
Or
Explain the process of mitosis and its regulation.
15. Discuss on the different agents which induce
carcinogenesis process.
Or
Explain the process of conversion of cultured cells to
tumour cells.
AFS-0591
3
WS3
Part C 10 30)
Answer any three questions.
16. Write in detail on voltage gated ion channel and pumps
which are powered by ATP.
17. Write in detail on the structure and biogenesis of
chloroplast.
18. Elaborate on the chemical composition of chromosomes.
19. Give a detailed note on the organization and function of
proteasomes.
20. Explain the different steps involved in apoptosis process.
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