How are carbohydrates classified?

2

(a)

State two main differences between globular proteins and fibrous proteins.

2

(a)

\(\alpha -\) Helix is a secondary structure of proteins formed by twisting of polypeptide chain into right handed screw like structures. which type of interactions are responsible for making the \(\alpha -\) helix structure stable ?

2

(a)

Why does compound (A) given below not form an oxime ?

2

(a)

Activation energy for the acid catalysed hydrolysis of surcose is 6.22 kJmol^-1, while the activation energy is only 2.15 kL mol^-1 when hydrolysis is catalysed by the enzyme sucrase. Explain

2

(a)

Glucose forms an oxime but glucose prntaacetate does not. Explain.

2

(a)

How do epimers differ from anomers? Give two examples.

2

(a)

Sugar is dextrorotatory but the mixture obtained after hydrolysis is laevorotatory. Explain. What is the name of the hydrolysis product? Also comment upon its sweetness.

2

(a)

What are the products of hydrolysis of
(i) lactose
(ii) sucrose. Also name the enzyme used for reaction.

2

(a)

Enumerate two reactions of glucose which cannot be explained by its open chain structure.

2

(a)

Describe the term D-and L-configuration used for amino acids with examples.

2

(a)