Carbohydrates
- Created by: Sarah
- Created on: 09-05-13 19:10
Carbohydrates are organic molecules made up of carbon, hydrogen and oxygen.
Monosaccharides:
Monosaccarides are single molecules, which build up to larger molecules. The general formula is (CH20)n, changing with the number of carbon atoms such as 3 (triose), 5 (pentose) or 6 (hexose).
Glucose is a hexose sugar, and exists as two isomers- the alpha (α) and beta (β) forms. The hydrogen (H) and hydroxyl (OH) groups on carbon 1 are the opposite in α and β glucose.
The main functions of monosaccharides are:
- to make ATP as an energy source.
- to build up to large molecules such as cellulose, starch ect.
Disaccharides:
Two monosaccharides form a disaccharide in a condensation reaction. In this reaction a glycosidic bond is formed and water is removed. For example two glucose molecules form maltose.
The main functions of disaccharides are:
- storage.
- …
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