NEET BIOLOGY

Detailed explanation-1: -A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond (Figure 3-1). Proteins are therefore also known as polypeptides. Each type of protein has a unique sequence of amino acids, exactly the same from one molecule to the next.

Detailed explanation-2: -A polypeptide is a polymer of amino acids joined together by peptide bonds. Etymology: Greek polýs (many) + peptide. Larger polypeptides or more than one polypeptide that occur together are referred to as proteins.

Detailed explanation-3: -In primary structure of proteins when each polypeptide in a protein has amino acids linked with each other in a specific sequence. This type o structure is known as a primary structure of proteins.