The diagram shows how the $\beta $-glucose units of cellulose are linked to each other.
What is the significance of the fact that the OH groups on carbon 2 in adjacent glucose molecules are on opposite sides of the molecule?
1 )
They can cross-link with other cellulose molecules by both hydrogen and glycosidic bonds.
2 )
They can form glycosidic bonds with adjacent OH groups of other cellulose molecules.
3 )
They can form hydrogen bonds between the $C{H_2}OH$ and OH on adjacent glucose molecules of the cellulose molecule.
They can form hydrogen bonds with adjacent OH and $C{H_2}OH$ groups of other cellulose molecules.
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