Download OU B.Sc 2018 Dec 3rd Year 3211 Biochemistry Molecular Biology Question Paper

FirstRanker.com

A Firstranker's choice.

FirstRanker.com

--- Content provided by​ FirstRanker.com ---

Code No. 3211

FACULTY OF SCIENCE

B.Sc. V-Semester (CBCS) Examination, November / December 2018

Subject : Biochemistry (Molecular Biology)

Paper—VI—-A (DSE E-1)

--- Content provided by FirstRanker.com ---

Time : 3 Hours Max. Marks: 60

PART-A(5x3=15 Marks)

(Short Answer Type)

Note : Answer any FIVE of the following questions.

1. DNA ligase

--- Content provided by‍ FirstRanker.com ---

2. Nucleosomes
3. Sigma factor and promoters
4. Inhibitors of transcription
5. tRNA
6. Signal hypothesis

--- Content provided by‍ FirstRanker.com ---

7. Catabolite repression
8. Rho-independent transcriptional termination

PART - B (3 x 15 = 45 Marks)

(Essay Answer Type)

Note: Answer ALL questions.

--- Content provided by‍ FirstRanker.com ---

1. (a) How are the leading and lagging strands of DNA synthesized in E.Coli.? Explain.
   OR
   (b) Give the experimental evidence to prove semi-conservative mode of replication. Write a note on bi-directional model of replication.
2. (a) Explain in detail about post-transcriptional processing of eukaryotic mRNA.
   OR
   

   --- Content provided by‍ FirstRanker.com ---

   (b) Explain the events of initiation and elongation stages of transcription process in prokaryotes.
3. (a) Give the important features of genetic code and add a note on wobble hypothesis.
   OR
   (b) Discuss on regulation of tryptophan operon.

FirstRanker.com

--- Content provided by⁠ FirstRanker.com ---