Cellulose
Cellulose is a long chain of β-glucose molecules connected by a 1-4 linkage. The dashed lines at each end of the figure indicate a series of many more glucose units. The size of the page makes it impossible to portray an entire cellulose molecule.
Source
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"OpenStax College, Eukaryotic Cells. October 16, 2013."
http://cnx.org/content/m44407/latest/Figure_04_03_09.jpg
OpenStax CNX
CC BY 3.0.
