Question

chitin starch glycogen cellulose are made up of glucose then why they have different names

Answer 1

Hello friend,

Chitin starch glycogen cellulose are made up of glucose but they have different molecular structures due to which they are names differently.

I hope this answered your questions.

Thanks for asking.

Answer 2

Number of glucose monosaccharide and their molecular structure differ from each other.  

Explanation:

The polysaccharides such as chitin, starch, glycogen, and cellulose are made up of glucose but they have different names because they differ from each other in terms of glucose monosaccharide and molecular structure. Both are made up of two glucose monosaccharide but in chitin an extra component called $\bold{NHCOCH_{3}}$ is present whereas it is absent in cellulose.