B.Sc I Sem - Biochemistry I - Question Paper 2005

I sem B.Sc. Examination, Nov/Dec 2005

(Semester Scheme)

BIOCHEMISTRY - I

Time : 3 Hours                                                                            Max. Marks : 60

Instruction : Answer any six questions from Part - A and any eight questions from Part - B.

PART - A

Answer any six of the following :   (2x6=12)

1. Define Viscosity. Give its SI unit.

2. Define semipermeable membrane.
3. Distinguish between strong and weak electrolytes.
4. Write the electronic configuration of chromium and copper.
5. Name the conjugate bases of the following :
   a) CH3 - COOH
   b) H30+
   c) NH3
   d) H3PO4
6. What is an adsorption Isotherm ?
7. What is half life period? Give its relation with decay constant.
8. What are biopolymers ? Give two examples.
9. Define lattice energy. How does it influence the stability of an ionic compound ?
10. Express :
a) 480 cm in metres
b) 18 gms/cc in kgm-3.

PART - B

Answer any eight of the following : (6x8=48)
1. a) What are the reasons for errors in quantitative analysis?
    b) Define surface tension. Give its S.I. unit.
2. a) Calculate the wavelength of an electron moving with a velocity of 2.05x10'7 ms-1.
    b) Derive an expression for the combined solution equation.

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