How many amino acids are present in insulin?

What are the hybridisation of the carbon atoms labeled $C_1$ and $C_2$,respectively in glycine?

Coagulation of egg,on heating,is because of:

Name the molecule which is eliminated during the formation of a peptide bond.

The helical structure of protein is stabilized by ..........

Assertion $(A)$: The denaturation of proteins can destroy all $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ protein structures.
Reason $(R)$: Curdling of milk is due to denaturation of proteins.
The correct option among the following is