A chain of amino-acids contained in the composition of proteins.

Polypeptides are peptides containing ten or more amino acid residues. The properties of a polypeptide are determined by the type and sequence of its constituent amino acids.

two or more amino acids bound together which upon a chemical reaction with water yields multiple amino acids.

A union of two or more amino acids: a protein.

A chain of many amino acids. olypeptides: 1) function as enzymes which are essential for life, 2) are essential structural components of cells and tissues, 3) form immunoglobulins and hormones, 4) can function as biochemical messengers with multiple functions essential to regulate the work of cells and tissues.

Small soluble proteins consisting of a few amino acids linked together.

These are proteins formed by the union of three or more (usually many) amino acids.

Chains of amino acids linked by peptide bonds.