Answer the following question given this paragraph: 

Cellulose is composed of very long strands of glucose monomers that are hydrogen bonded to one another. Cellulose is largely indigestible and comprises the cell walls of plants.


Q: What is composed of very long strands of glucose monomers, is largely indigestible and comprises the cell walls of plants?

 Choices:

- vascular cambrium

- chlorophyll

- tree bark

- cellulose

A:
cellulose
