What is the difference between protein biopolymers and carbohydrate biopolymers? What are their similarities?

The main difference between proteins and carbohydrates (their polymer molecules) is that they contain different structural units – monomers. If the main component of proteins are amino acids, then polymeric carbohydrates are built from carbohydrates-monomers. Alternatively, one starch molecule can contain more than a billion molecules of alpha-d-glucose, a molecular monomer. They also differ in the nature of the chemical bond between the monomers.

What polymers have in common is that they are built from a huge number of molecules of monomeric compounds.