Differentiate between globular and fibrous proteins. 

Fibrous protein

Globular protein

1.It is a fibre-like structure formed by the

polypeptide chain. These proteins are held

together by strong hydrogen and disulphide

bonds

1.

The polypeptide chain in this

protein is folded around itself,

giving rise to a spherical

Structure.

2. It is usually insoluble in water, but soluble in strong acids and bases.

2. It is usually soluble in water, acids, bases and salts.

3. They have comparatively stronger intermolecular forces of attraction.

3. They have weak intermolecular hydrogen bonding.

4. Example: Collagen, fibroin, myosin, hair, skin,silk, wool, etc.

4. Egg, albumin, casein of milk, insulin.