sentence: Wood is largely cellulose and lignin, while paper and cotton are nearly pure cellulose.
sentences_before: The structural components of plants are formed primarily from cellulose.
sentences_after: Cellulose is a polymer made with repeated glucose units. Humans and many other animals do not digest cellulose. Certain animals can digest cellulose, because bacteria possessing the enzyme are present in their gut. The classic example is the termite.
concept_name: wood
headings: Polysaccharide Cellulose
categories: Carbohydrates Organic compounds Polymers