BIOMOLECULES AND ENZYMES

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.

Detailed explanation-2: -An amino acid is the fundamental molecule that serves as the building block for proteins. There are 20 different amino acids. A protein consists of one or more chains of amino acids (called polypeptides) whose sequence is encoded in a gene.

Detailed explanation-3: -A peptide is a short chain of amino acids (typically 2 to 50) linked by chemical bonds (called peptide bonds). A longer chain of linked amino acids (51 or more) is a polypeptide. The proteins manufactured inside cells are made from one or more polypeptides.

Detailed explanation-4: -Peptides (from Ancient Greek (peptós) ‘digested’, from (péssein) ‘to digest’) are short chains of amino acids linked by peptide bonds. A polypeptide is a longer, continuous, unbranched peptide chain. Polypeptides which have a molecular weight of 10000 or more are called proteins.

Detailed explanation-5: -(PAH-lee PEP-tide) A substance that contains many amino acids (the molecules that join together to form proteins).