Achain is a sequence of amino acids that is the foundation for the basic structure of a protein.
a. polynomial
b. polypeptide
c. polysaccharide eliminate
d. polyunsaturated

The correct answer is (B) Polypeptide.

When two amino acids are joined, the formation of peptide bond takes place by the loss of a molecule of water.Each of the the amino acid joins to form protein and the bond between them is peptide bond. A series of amino acid joined by peptide bonds forms a polypeptide chain.

answer; i believe that the correct answer is (lung);