M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Biochemistry
GENE EXPRESSION AND METABOLIC REGULATION
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. What are analogues?
2. Define promotor gene.
3. Write the role of cyclic AMP.
4. What is Calmodulin?
5. What is feed back regulation?
6. Name the amino sugars.
7. What are Ketone bodies?
8. Write the transmination reaction.
9. List out the factors that affect the levels of purine and
pyrimidine.
10. What are the end products of purine catabolism.
Sub. Code
4MBC3C1
AFF-4939
2
Sp 5
Part B x 5 25)
Answer all the questions
11. Give an account on repressor proteins.
Or
Elaborately discuss the Oncogene.
12. Explain the role of calcium as secondary
messengers.
Or
How blood pressure is regulated by angiotensin?
13. Exemplify the oxido-reduction reaction.
Or
Discuss the gluconogenetic pathway.
14. Describe the urea cycle.
Or
How pH and temperature is regulate in human
beings?
15. Give an account on Interconversion of Metabolites.
Or
Describe the catabolism of purine.
AFF-4939
3
Sp 5
Part C 10 30)
Answer any three questions.
16. Elaborately discuss the try Operon.
17. Exemplify the role of hormone in regulation of water and
electrolyte.
18. Discuss the uronic acid pathway.
19. Discuss the overview of non essential amino acid
biosynthesis.
20. Explain the biosynthesis and regulation of pyrimidine
nucleotide.
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