Starch and protein molecules are called polymers.Why?

Answer 1

because they are _poly_mers |o|

starch is made of two kinds of polysaccharides, each made of hundreds of glucose _monomers_ linked together by glycosidic bonds.

proteins are made of polypeptide chain(s), each chain consists of hundreds/thousands amino acid residues [or monomers].

Answer 2

Proteins are actually not polymers. Starch is a polymer by using fact's a repeating chain of glucose molecules. With a polymer, you are able to decrease out a bite of any length at any postion, and the patter of repeating instruments would be an identical. With a protein, that may not the case because there are different amino acids that are actually not arranged in a particular repeating patter. the sole way you ought to call a protein a polymer is that in case you ignore with regard to the side chains and concentration merely on the "returned bone" of the protein, it somewhat is a repeating amino-carboxylate chain.