Biological Molecules - Carbohydrates.

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Carbohydrates are large complex molecules composed of long monosaccharide chains.Glucose exists in two forms ; alpha, the hydroxyl group faces down. Beta the hydroxyl group faces up.


Monosaccharides join together with glycosidic bonds.

During synthesis water is released.

With maltose 2 glucose units are bonded together.

You can describe where bonds are with numbered Carbons and what type of glucose is involved. Maltose has an alpha, 1-4 glycosidic bond.

Starch is the main energy store for plants:

A mixture of two polysaccharides of alpha glucose Amylose and Amylopectin.

Amylose is a long unbranched chain of alpha glucose. It forms three-dimensional helix with hydrogen bonds…


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