Give difference between polypeptides and proteins.

Explanation

Polypeptides are the macromolecules in which a large number of peptides are present.
Their general structure is as follows:
`NH_(2)-underset(R )underset(|)(CH)-overset(O)overset(||)Cunderset("APolyperptide")([-NH_(2)-underset(R )underset(|)(CH)-overset(O)overset(||)C-]_(n))-NH-underset(R )underset(|)(CH)-overset(O)overset(||)C-OH`
The polypeptide with molecular mass more than 10,000 a.m.u, are called protein.