Download PTU B-Tech Bio Technology 2020 Dec 4th Sem 55087 Cell And Molecular Biology Question Paper

Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) BT-Bio Technology 2020 December 4th Sem 55087 Cell And Molecular Biology Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech.(BT) (2012 to 2017) (Sem.?4)
CELL & MOLECULAR BIOLOGY
Subject Code : BTBT-404
M.Code : 55087
Time : 3 Hrs. Max. Marks : 60
INST RUCT ION TO CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1.
What are the properties of DNA polymerases?
2.
Write the termination codons. What is the importance of termination codon?
3.
What is the role of sigma factor in bacterial transcription?
4.
Differentiate between euchromatin and heterochromatin.
5.
What are the enzymes and proteins involved in the initiation of DNA replication in
prokaryotes?
6.
What is the importance of DNA methylation in E. coli genome replication and repair?
7.
Describe excision based repair system.
8.
Explain the semi-conservative replication of DNA.
9.
What is a promoter?
10. Define endocytosis.
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SECTION-B
11. Using suitable diagrams describe Okazaki fragments. How are Okazaki fragments joined
in eukaryotes and prokaryotes.
12. Define polymerization rate, processivity and proof reading activity of DNA polymerase.
13. Explain the different DNA repair mechanisms.
14. Write short notes on any two :
a) Telomerase and its significance
b) Cot curve and its significance
c) Structure and function of Microtubules
d) Properties of Genetic code
15. How are bacterial genomes different from genomes of multicellular eukaryotes?
SECTION-C
16. What is the principle of PCR? Describe the steps involved in PCR and the importance of
various parameters.
17. Differentiate between Meiosis and Mitosis and describe the process of meiosis during
oogenesis in humans.
18. Give the different phases of cell cycle and write a note on cell cycle check points.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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