What are polysaccharides

a carbohydrate (starch, cellulose, or glycogen) whose molecules consist of a number of sugar molecules bonded together.

for example storage polysaccharides such as starch and glycogen, and structural polysaccharides such as cellulose and chitin.

It's a carbohydrate (e. g. starch, cellulose, or glycogen) that's has its molecules consisting of lots of sugar molecules bonded together.

Starch purpose

Energy

Glycogen purpose

Store glucose

Chitin purpose

Structure

Cellulose purpose

Structure and dietary fiber

Starch is found ...

In blood stream and cells

Glycogen is found ...

In liver and muscle cells

Chitin is found ...

In cell walls

Cellulose is found ...

In plant cell walls