Give difference between polypeptides and proteins.

Explanation

Polypetides are the macromolecules in which a large number or peptides are present. Their general structure is as follows.
`NH_2 - underset(R)underset(|)CH-overset(O)overset(||)C-underset("A polypeptide")([-NH-underset(R)underset(|)CH-overset(O)overset(||)C-]_n)-NH-underset(R)underset(|)CN-overset(O)overset(||)C-OH`
A polypeptide The polypeptides with molecular mass more than 10,000 a.m.u are called proteins.