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Posted Date: 26 Oct 2009 Posted By: Pradip B Choudhury Member Level: Gold
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2007 Assam University B.Sc TDC Part-I Bio-Technology Honours --- First Paper Question paper
NTS-07/ BTCH-1 /368
2007
BIOTECHNOLOGY (Honours)
First Paper
(Bichemistry)
TDC Part-I
Full Marks : 70
Pass Marks : 21
Time : 3 hours
The figure in the margin indicates full marks for the questions
Answer all questions
1. What is van der Waals interaction? Discuss the nature of chemical bonding in protein
structure. 2 + 8 = 10
Or
Write short notes on (any two) : 5 x 2 = 10
(a) Isomerism
(b) pH
(c) Buffers
(d) Biomolecules
2. What is bioenergetics? Discuss the concepts of enthalpy and entropy in living system.
2+8=10
OR
Write short notes on ( any two): 5 x2 =10
(a) Free energy
(b) Chemiosmotic hypothesis
(c) ATP
(d) Redox potential
3. What is signal peptide? Describe briefly the process of protein synthesis in a cell. 2+8=10
OR
Write short notes on (any two) : 5 x 2 = 10
(a) a – Helix
(b) Cholesterol
(c) DNA
(d) Vitamin A
4. What is hormone? Describe the sources and function of trophic hormones in animals.
5+15=20
OR
Write short notes on (any two) : 5 x 4 =20
(a) Neurotransmitters
(b) Photophosphorylation
(c) Glycolysis
(d) Electron transport chain
5. What is allosteric enzyme? Describe the kinetic of a reaction catalyzed by an enzyme.
5 + 15 = 20
Or
Write short notes on : 5 x 4 = 20
(a) Biosensors
(b) Km
(c) Coenzyme
(d) Competitive Inhibition
* * *
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