LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – ZOOLOGY
SECOND SEMESTER – APRIL 2012
ZO 2814 – CELL AND MOLECULAR BIOLOGY
Date : 17-04-2012 Dept. No. Max. : 100 Marks
Time : 9:00 – 12:00
Part A
Answer ALL the questions: (10×2=20 Marks)
- Define sedimentation coefficient.
- What are tumour suppressor genes?
- Comment on proto lysosomes.
- Explain S-phase of cell cycle.
- Write notes on metastasis.
- What are carcinogens?
- Differentiate heterochromatin from euchromatin.
- What is selective permeable plasma membrane?
- Define genomics.
- Comment on puffing and gene expression.
Part B
Answer any FOUR questions: (4×10=40 Marks)
- Explain the inherited disorders in man.
- Give an account on mitosis.
- Write notes on characters of cancer cells.
- Explain transduction.
- Discuss carcinogens and specific cancer.
- Write an account on genetics of aging.
Part C
Answer any TWO questions: (2×20=40 Marks)
- Explain prokaryotic and eukaryotic organization.
- Give an account on pedigree analysis.
- Write an essay on Lac operon.
- Explain tumour suppressor genes, inherited cancer genes and cellular function of oncoproteins.