LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS & CHEMISTRY

IB 38

FOURTH SEMESTER – APRIL 2007

PB 4204 – BIOINFORMATICS – II (GENOMICS & PROTEOMICS)

 

 

 

Date & Time: 19/04/2007 / 9:00 – 12:00 Dept. No.                                              Max. : 100 Marks

 

 

PART A

Answer all the following questions                                                                         (20 marks)

1. Choose the correct answer (5 x 1  = 5 )

 

1. ________ score presents the signal peptide cleavate site .
2. a) C b) S c) A     d) Y
3. PDB is a database of ________.
   1. secondary structures b) transmemrane helices
   2. c) 3D structures d) motifs.
4. The noncoding regions of genomes are known as ________.
5. a) introns b) exons c) promoter      d) signal peptides.
6. 5‘ capping is a ________modification.
   1. post transcriptional b) translational
   2. c) splicing d) sequencing.
7. ________ is the software for promoter site prediction.
   2. promoter 2.0 b) promoter 3.0
   3. c) promoter 6.0 d) promoter 1.0

 

1. State whether the following statements are True or False (5 x 1 = 5 )

6. Gene cloning can be used to produce insulin.
7. Codon bias is the unequal usage of codons for aminoacids.
8. C score is used to predict the signal peptide cleavate sites.
9. Genscan predicts INIT, INTR and TERM exons.
10. Promoter regions are present in the upstream region of the genes.

 

III. Complete the following                                                                              (5 x 1 = 5)

11. Donor site is the beginning of ________.
12. ________ is the enzyme for bioluminescence in glow worms.
13. ________ are the enzymes used to cut DNA sequences.
14. ________ are used as vectors in cloning.
15. ________ is the software for visualizing protein structures.

 

1. Answer the following each within 50 words . (5 x 1 = 5)
2. What is Splicing ?.
3. Explain Drought resistance.
4. Discuss the Importance of CpG island.
5. What is an atomic coordinate file ?.
6. Define : exon.

PART B

 Answer any five of the following each in about 350 words. Draw diagrams wherever necessary.                        

                                                                                                                                                (5 x 8 = 40)

21. Discuss the applications of bioinformatics.
22. Explain the software for the prediction of post translational modification (glycosylation).
23. Explain the signalp software in detail.
24. Discuss any two softwares for the analysis of genomes.
25. Explain the software for the prediction for transmembrane helix prediction.
26. Discuss codon usage databases and their applications.
27. Discuss Netgene 2 and its applications.
28. Discuss about promoter 2.0 and its output format.

PART C

Answer the following questions in about 1500 words. Draw  diagrams wherever necessary                      

                                                                                                                                                (2 x 20 = 40)

29. a) Explain gene cloning with Insulin as an example.

OR

1. Discuss the gene prediction software genscan in detail.

 

30. a) Discuss the applications of Bioinformatics..

OR

1. Explain DNA sequencing in detail.

 

 

 

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