Final answer:
Polyesters are synthetic polymers made from ester monomers, polyamides are polymers made from amide monomers, and polypeptides are natural polymers made from amino acid monomers.
Step-by-step explanation:
Polyesters, polyamides, and polypeptides are all types of polymers, but they have different structures and properties.
Polyesters are synthetic polymers made from ester monomers. They have a repeating ester linkage in their backbone, which gives them strong and flexible properties. Examples of polyesters include PET (polyethylene terephthalate) used in bottles and PBT (polybutylene terephthalate) used in automotive parts.
Polyamides, on the other hand, are polymers made from amide monomers. They have a repeating amide linkage in their backbone, which gives them strong and durable properties. Nylon is a well-known polyamide that is used in fabrics and carpets.
Polypeptides are natural polymers made from amino acid monomers. They have a repeating peptide linkage in their backbone, which gives them the ability to fold into complex 3D structures. Polypeptides are important in biological processes and can have various functions in the body, such as enzymes and hormones.