Annamalai University 2007 M.Sc BioTechnology CELL BIOLOGY - Question Paper

M.Sc. DEGREE EXAMINATION, 2007
( BIO - INFORMATICS )
( 2nd SEMESTER )
( PAPER - VII )
610. CELL BIOLOGY
( New Regulations )

Maximum : 100 Marks
ans any five
All ques. carry equal marks.
(5 × 20 = 100)
1. define the unique features of
(i) Mitochondria.
(ii) Chloroplast.
(iii) Golgi apparatus.
and (iv) Lysosome.
Relate the structure of the above organelles
to the functions. (4 × five = 20)
2. discuss in detail :
(a) The active transport by ATP -
powered pumps. (10)
(b) Co - transport by anti-porters and
symporters. (10)
3. With a neatly labelled diagram, define the
structure and functions of gap junction and
tighet junction. (10 + 10)
4. How is eukaryotic cell cycle regulated ? explain
in detail with a neatly labelled diagram. (20)
5. provide an account on the structure and role of
the individual components of extracellular
matrix. (20)
6. discuss the role of calcium and inositol
triphosphate as 2nd messengers. (10 + 10)
7. (a) define the cycle of events occuring
after binding a ligand to receptor tyrosine
kinase and activation of Ras. (15)
(b) discuss cross - talk in signalling pathways.
(5)
8. (a) explain in detail the principle,
instrumentation and the method of
separating various cell kinds. (14)
(b) explain the advantages of phase contrast
and fluorescence microscopy. (6)

Earning:   Approval pending.