LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.A. DEGREE EXAMINATION – ECONOMICS
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FIRST SEMESTER – APRIL 2007
EC 1800 – MACRO ECONOMIC THEORY – I
Date & Time: 25/04/2007 / 1:00 – 4:00 Dept. No. Max. : 100 Marks
Section – A
Answer All questions. All questions carry equal marks. 10 x 2 = 20
- Mention the uses of the following in cell biology.
- Condenser system in microscope.
- Camera lucida
- Give the composition and uses of Bouin’s fixative and carnoy’s solution.
- Define sedimentation co-efficient.
- Differentiate karyokinesis from cytokinesis.
- What are the different types of microtomes?
- Define the terms:
- a) Endocytosi’s b) Heterochromatin
- Explain the applications of the following:
- a) freezing-Drying b) FISH
- Highlight the characteristics of Cancer cells.
- Briefly explain the molecular events which takes place during cell cycle.
- Compare the organization of prokaryote and enkaryote cells.
Section – B
Answer any four questions. All questions carry equal marks. 4 x 10 = 40
- With the help of schematic representation explain the principle of autoradiography.
- Write a brief account on
- a) Micrometry b) Ribosomes.
- Bring out the structural peculiarities and functions of microtubules.
- Write an account on
- a) Geiger Muller counter b) Giant chromosomes.
- Describe the various types of RNA and comment on their role in cell biology.
- Explain the steps involved in the production of somatic cell hybrids.
Section – C
Answer any TWO questions. All question carry equal marks. 2 x 20 = 40
- Explain the principle and working mechanism of phase contrast microscope. Comment on its biological applications.
- Explain the various steps involved in the preparation of tissues for histological and histochemical observations.
- Describe the principles and applications of
- Thin layer chromatography
- Zonal ultra centrifugation
- Give an account of the structure and replication of DNA.