Q.

Which structure of protein remains intact after coagulation of egg white on boiling           [2024]

1 Primary  
2 Tertiary  
3 Secondary  
4 Quaternary  

Ans.

(1)

During denaturation secondary and tertiary structures are destroyed but primary structure remains intact. For example: (a) the coagulation of egg white on boiling (b) curdling of milk which is caused due to the formation of lactic acid by the bacteria present in milk.