CODE NO: R050212303 SET NO. 3
2007 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
II B.TECH I SEMESTER REGULAR EXAMINATIONS
CELL BIOLOGY
(BIO-TECHNOLOGY)
NOVEMBER 2007
MAX MARKS: 80
TIME: 3 HOURS
Answer any FIVE Questions
All Questions carry equal marks
1. Write short notes on [8 × 2 = 16]
(a) Cell theory
(b) Discovery of cells
2. Describe three functions of microtubules and microfilament. Compare and contrast microtubule
assembly and intermediate filament assembly. [16]
3. Discuss each of the following:
(a) the structure and role of the cell membrane
(b) the structure and role of mitochondria. [16]
4. How are substances moved across the plasma membrane against its concentration
gradient? [16]
5. Justify the statement ”There are variations observed in cell cycle patterns of some
cells”. [16]
6. Explain what is meant by cell differentiation? [16]
7. Citing a suitable example explain nuclear receptors. [16]
8. Explain the role of protein Tyrosine kinase in cell growth and differentiation.
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