Tuesday 9 February 2021

STPM Biology Biological Molecule Part 5 Carbohydrate - Polysaccharides

1. Polysaccharides are polymer.

2. Polymer = a large molecule made up of many repeating units called monomers. 

3. The monomers of polysaccharides is monosaccharides.

4. General properties:

  • Not soluble in water.
  • Not sweet.
  • Cannot crystallize.
  • Has high molecular mass compared to monosaccharides and disaccharides.
  • Can undergo hydrolysis to form monosaccharides or disaccharides.

5. Examples of polysaccharides:

  • Starch
  • Glycogen
  • Cellulose
  • Hemicellulose and pectin
  • Chitin

Examples of polysaccharides
Examples of polysaccharides

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