Which of the following macromolecules is not a true polymer

Which of the following macromolecules is not a true polymer? Cellulose Phospholipid DNA Insulin

Solution

Solution:

(D)Insulin

Polymers is mainly chain of repeating elements.Insulin is not a polymer.It is a polypeptide secreted by pancreasePhospholipid is a polymer as it composed of glycerol and two molecule of fatty acid.DNA is a polymer and it consists of nucleotides chains.Cellulose is one of the natural linear polymer and it is made up of repeating unit of glucose.