- Created by: Abi_moon
- Created on: 15-05-20 18:08
- contain carbon, hydrogen and oxygen.
- several types = e.g. sugars, starch and cellulose.
- polymer = polysaccharides.
Polymer: large molecules made up of monomers (smaller units)
- monosaccharides are the monomers of polysaccharides.
- small, water-soluble molecules.
- taste sweet.
Divided in 2 groups:
- single units from which all other carbohydrates are built from.
- glucose & fructose are both monosaccharides.
Glucose has two forms: alpha & beta. (task: draw the structures of each)
- formed when two monosaccharides are joined together by a chemical reaction.
- molecule of water is also formed (condensation reaction)
glucose + glucose = maltose (a disaccharide) + water
glucose + frutose = sucrose (a disaccharide) + water
- starch molecules = made up of two different polysaccharides.
- Both of the above are polymers of glucose.
- insoluble, compact starch molecules are an ideal way of storing glucose.
- starch is only found in plant cells.