BSc Biotechnology Sem III ATKT 2017-18 ATKT Biotech Molecular Biology Question Paper - Mumbai University | munotes

Questions asked in this paper

• 1. Attempt all questions

1. Q2 All questions carry equal marks
2. Q4 Use of log tables and non-programmable calculator is allowed
3. Q5 For Q 2,Q 3 and Q 4 attempt A and BOR C and D
4. Q1 Do as directed (Any fifteen) 15 marks
5. Q1 Define Transcription
6. Q2 What is an activator?
7. Q3 What does CPSF stands for?
8. Q4 Give the role of Poly (A) tail of mRNA
9. Q5 State true or False: RNA Pol. I is found in nucleolus
10. Q6 Give the role of Ribozymes
11. Q7 State true or False: The 3’ to 5’ DNA strand that is read to make the RNA strand is not called the template strand
12. Q8 During protein sorting, once the signal sequence is fully into the cisternal space of the ER, it is removed from the polypeptide by the
13. Q9 The initiator t-RNA binds to the subunit in the site
14. Q10 Define open reading frame
15. Q11 Give significance of following post translational modification phosphorylation of proteins
16. Q12 What are sense codons?
17. Q13 is the enzyme which adds the formyl group to the methionine during initiation of translation in bacteria
18. Q14 Name an amino acid encoded by a single codon
19. Q15 Define RNA interference
20. Q16 State the function of B-Galactosidase enzyme in Lac operon
21. Q17 Tryptophan operon is an example of a Operon system
22. Q18 State the role of Rec A protein in lytic pathway
    • Q.P. Code: 23086
23. Q20 Give one example of a genetic disease which results from effects Elaborate the process of elongation phase of transcription in 08
24. Q2 B Rho independent termination of transcription Describe the processing of pre mRNA to mature RNA. 08
25. Q2 D_ Explain the role of gRNA in RNA processing. 7 marks
26. Q3 A_ What is genetic code? Write short note on characteristics of genetic 8 marks
27. Q3 B the differences between prokaryotic and eukaryotic translation 7 marks
28. Q3 C_ Explain the process of translational termination in prokaryotes and eukaryotes with the help of a diagram Draw the structure of t-RNA. Explain the role of t-RNA in translation. 07 8 marks
29. Q4 A_ Give an account of mode of action of an inducible operon with a phage, the choice between the lytic and lysogenic pathways, 07 involves the sophisticated genetic switch.” Justify Give an account of Regulation of Galactose utilization in yeast. 08 8 marks
    • Q . Describe the model for the imprinting of the Igf2 and H19 genes. 07 Write Short notes on any three of the following 15 e Glucose effect in Lac operon

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