Molecules of Life — DU B.Sc (hons) Chemistry Previous Year Question Papers

(c) What is the structure-activity relationship (SAR) of drug molecules, and how is it used to optimize drug design and efficacy? 4 Write short notes on the following: (b) Primary and tertiary structure of protein. (c)Lock and key model and Induced fit model 5(a) Why sucrose is known as an invert sugar? How do you account for the fact that sucrose does not reduce Fehling's solution? (b) Describe Edman's method of-terminal analysis. What is the advantage of this method? (c) What are enzymes? Discuss briefly the classification of enzymes and their uses. 6 (a) Differentiate between reducing and non-reducing sugars. Give their examples. Explain their biological functions. (b) How is electrophoresis used as a method for separation of amino acids? (c) What are coenzymes and cofactors? Give their role in biological reactions.