Answer:
A polypeptide is a long chain of amino acids that will involve interactions between interactions of "R" groups in the amino acid sequence and ionic, covalent and hydrophobic interactions between "R" groups.
Explanation:
When two amino acids are joined, we call them dipeptides. When there are three and four amino acids joined by peptide bonds, we call it tripeptide and tetrapeptide, respectively. Polypeptides are formed by a long chain of amino acids, and it is in this category that proteins are part, as they are made up of a large number of amino acids.
A polypeptide is a long chain of amino acids that will involve interactions between interactions of "R" groups in the amino acid sequence and ionic, covalent and hydrophobic interactions between "R" groups.