Comparison Table between starch and cellulose

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Starch Cellulose
Structur Mixture of amylose and amylopectin Structur Made up of a straight, long chain of glucose
e (similar to glycogen but with fewer e molecules bonded together by a beta 1,4
branches) glycosidic bond
The chains curve to coil up into a helical To form glycosidic bonds, subsequent glucose
structure. molecules must be at 180degrees to each
other, or in other words, each must be upside
down to the other to allow the -OH and -HO
groups to bond
Made up of a long chain of glucose Molecules are held together by hydrogen bonds
molecules bonded together by an alpha making them rigid and tough.
1,4 glycosidic bond.
Functio Stored as glucose in plants as an energy Functio Stored as glucose in plants.
n store. n
Does not affect water potential as it is Does not affect water potential as it is non-polar
non-polar and insoluble. and insoluble.
The coiled nature makes them good for The straight chains with hydrogen bonds are
energy storage as they're compact. able to resist help keep cell walls strong in
plants.

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