Periyar University 2005 B.Sc Biotechnology I — CELL BIOLOGY - Question Paper

First Semester
Biotechnology
Paper I — CELL BIOLOGY
Time : 3 hours Maximum : 100 marks
PART A — (10 x two = 20 marks)
ans ALL ques..
1. What is photorespiration?
2. Define cell theory.
3. What is a nucleotide?
4. Name the constituent of cell membrane.
5. How the proteins are classified? provide example for every.
6. What is cytoskeleton?
7. Which is the longest phase in cell cycle? Mention the
time duration?
8. What is chiasma point?
9. What is neurotransmitter? provide 1 example.
10. What is Sarcoplasmic reticulum?
PART B — (5 x four = 20 marks) ans ALL ques..
11. (a) Draw the structure of a prokaryotic cell and
tag the parts and mention their few function.
Or
(b) Why do multicellular organisms able to grow much larger than unicellular organisms?
12. (a) Briefly define about cell wall
polysaccharide.
Or
(b) Enumerate the most important function of fatty acids in a residing cell.
13. (a) Enumerate the biochemical activities of
peroxisomes.
Or
(b) discuss the role of mitochondrial enzymes in cellular respiration.
14. (a) discuss the significance of crossing over.
Or
(b) discuss the prokaryotic cell division.
15. (a) Sperm is considered as motile cell, justify
and provide reasons with suitable sketch.
Or
(b) explain the structure and function of nerve cell.
PART C — (5 x 12 = 60 marks)
ans ALL ques..
16. (a) define about animal cell. How they differ
from plant cell?
Or
(b) define the physical organization of Bacteria cell and difference that from animal cell.
17. (a) discuss the role of protein in Biological nembrane.
Or
(b) define the structure of DNA with special •eference in its kinds.
18. (a) define the energy yielding process in a jell.
Or
(b) define the structure and function of rhloroplast.
19. (a) Summaries the events in Meiosis.
Or (b) provide a detailed account on cell kinds.
20. (a) Write an essay on muscle contraction specify the role of ATPase in muscle contraction.
Or
(b) define the structure and function of Neuron.

Earning:   Approval pending.