Wednesday, October 21, 2009

btechbiotechnology-cellbiology-jntu old questionpapers

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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