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Polysaccharides

Polysaccharides are long chains of many monosaccharides joined together by glycosidic
bonds.

There are three important polysaccharides:

Starch

Is the plant storage polysaccharide. It is insoluble and forms starch granules inside many
plant cells. Being insoluble means starch does not change the water potential of cells, so does
not…

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Is only found in plants, where it is the main component of cell walls. It is poly (1-4) glucose,
but with a different isomer of glucose. Cellulose contains beta-glucose, in which the hydroxyl
group on carbon 1 sticks up. This means that in a chain alternate glucose molecules are
inverted.…

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Polysaccharide Function: Structure: Relationship of
: structure to function:
Starch Main storage Made of 2 polymers amylose and Insoluble therefore
polysaccharide amylopectin. good for storage.
in plants.
Amylose: a polymer of glucoses Helix is compact.
joined by 1,4glycosidic bonds.
Forms a helix with 6 glucose The branches mean
molecules per…

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