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 peptide is two or more amino acids joined together by peptide bonds, and a polypeptide is a chain of many amino acids. A protein contains one or more polypeptides. Therefore, proteins are long chains of amino acids held together by peptide bonds.

Detailed explanation-3: -Polypeptide vs Protein: at this point, the polypeptide structure is called a protein because it has formed a functional conformation. Hydrophobic bonds – side chains that are non-polar and the hydrophobic groups together.

Detailed explanation-4: -Meanwhile, proteins are long molecules made up of multiple peptide subunits, and are also known as polypeptides. Proteins can be digested by enzymes (other proteins) into short peptide fragments.

Detailed explanation-5: -A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide.