Assam University 2007 B.Sc Biotechnology TDC Part-I Bio-Technology Honours --- First - Question Paper

NTS-07/ BTCH-1 /368

2007
BIOTECHNOLOGY (Honours)
First Paper
(Bichemistry)
TDC Part-I

Full Marks : 70
Pass Marks : 21

Time : three hours

The figure in the margin shows full marks for the ques.
ans all ques.


1. What is van der Waals interaction? explain the nature of chemical bonding in protein
structure. two + eight = 10

Or
Write short notes on (any two) : five x two = 10
(a) Isomerism
(b) pH
(c) Buffers
(d) Biomolecules

2. What is bioenergetics? explain the concepts of enthalpy and entropy in residing system.
2+8=10
OR
Write short notes on ( any two): five x2 =10
(a) Free energy
(b) Chemiosmotic hypothesis
(c) ATP
(d) Redox potential

3. What is signal peptide? define briefly the process of protein synthesis in a cell. 2+8=10
OR
Write short notes on (any two) : five x two = 10
(a) a – Helix
(b) Cholesterol
(c) DNA
(d) Vitamin A
4. What is hormone? define the sources and function of trophic hormones in animals.
5+15=20
OR
Write short notes on (any two) : five x four =20
(a) Neurotransmitters
(b) Photophosphorylation
(c) Glycolysis
(d) Electron transport chain

5. What is allosteric enzyme? define the kinetic of a reaction catalyzed by an enzyme.
five + 15 = 20
Or
Write short notes on : five x four = 20
(a) Biosensors
(b) Km
(c) Coenzyme
(d) Competitive Inhibition


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Earning:   Approval pending.