R5211104 Applied Chemistry And Biochemistry

R5

Code No: R5211104

II B.Tech I Semester(R05) Supplementary Examinations, December 2009 APPLIED CHEMISTRY AND BIOCHEMISTRY (Bio-Medical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Define electrolyte and non-electrolyte with suitable examples. (b) Define strong and weak electrolytes (c) Explain Arrhenius ionic theory along with postulates.

[5+5+6]

2. (a) Differentiate between addition and condensation polymerization with suitable examples. (b) Describe the manufacture of polyethylene by the free-radical process.

[8+8]

3. Distinguish between: (a) Flash point and cloud point. (b) Petroleum and synthetic lubricants. (c) Fluid film and boundary lubrication.

[5+6+5]

4. Write short notes on the following: (a) Nucleus (b) Mitochondria (c) Ribosomes (d) Lysosomes.

[4+4+4+4]

5. (a) How an enzyme is extracted and purified from a living cell? (b) Define the unit of enzyme activity. How can you explain the purification of an enzyme?

[8+8]

6. Why the Kreb’s cycle is known as final common path way of metabolism? Explain. [16] 7. (a) Describe the chemical composition of urine under normal conditions. Add a note on tubular maximum ( Tm ). (b) What are the normal and abnormal constituents of urine? Explain. 8. Explain the mobile and stationary phases of Chromatography. ?????

[8+8] [16]