1.

Differentiate between fibrous proteins and globular proteins. What is meant by the denaturation of a protein?

Answer»
Fibrous ProteinsGlobular Proteins
1. Consist of linear thread-like molecules which tend to lie side by side to form fibre
like structure.		1. Polypeptide chain  s folded, around itself forming almost spheroidal shape.
2. Insoluble in water.2. Soluble in water.
3. Keratin in hair, fibroin in silk, etc.3. Albumin in eggs, insulin, etc.

Denaturation of Proteins 

When a protein in its native form, is subjected to a change in temperature or change in pH, the hydrogen bond are disturbed. Due to this, globules unfold and helix get uncoiled and protein loses its biological activity. This is called denaturation of protein. During denaturation 2° and 3° structures are destroyed but 1° structures remain intact, e.g., coagulation of egg white on boiling, curdling of milk, etc.


Discussion

No Comment Found

Related InterviewSolutions