LIFE SCIENCE

Detailed explanation-1: -As for proteins, biochemists generally reserve the term for large peptide molecules, which can either be one long chain of 100 or more amino acids – a ‘complex polypeptide’, if you like – or they can be comprised of several amino acid chains joined together.

Detailed explanation-2: -Therefore, they are known as macromolecular polypeptides. There are more than 100 amino acids in a protein macromolecule which are covalently bonded with each other through peptide bonds that are a type of amide bonds.

Detailed explanation-3: -Conversely, chains of approximately 100 amino acids or more are termed proteins 1. Glycoproteins are proteins with a carbohydrate component and lipoproteins are proteins with a lipid component. The sequence of amino acids in the protein chain is called the primary structure.

Detailed explanation-4: -Generally, chains of 10 or fewer amino acids are deemed to be peptides, chain length from 10-100 are polypeptides, and greater than  100 amino acids are called proteins.

Detailed explanation-5: -Polypeptides. The peptides contains more than 100 amino acid units is called as polypeptides. Example : Amalin, Glucagon.