Macromolecules II

Macromolecules II - Polysaccharides Structure: - 100's,...

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Polysaccharides Structure: - 100’s, 1000’s of monosaccharides linked together Important Polysaccharides: Starch Thousands of repeating  glucose  units Synthesized & stored in plants Glycogen Also repeating  glucose  units Synthesized & stored in animals (In liver & muscles) Cellulose Thousand of repeating  glucose Found in plants (cotton, paper) Woody structures of plants Most abundant organic material on earth 2.  Lipids – Fats Diverse molecules – not strictly repeating subunits But share a single property: Do not easily dissolve in water (hydrophobic) - Lipids are  non-polar  substances (water is polar) Many functions of lipids: - cell membranes - energy - hormones - insulation Major Groups of Lipids: - water repellent 1. Simple Lipids - vitamins 2. Complex lipids 3. Steroids 1. Simple Lipids Includes  fatty acids (FAs) - FAs are long chains of carbons with –COOH at one end - Hydrophobic (water-fearing), nonpolar molecules May have double bonds between carbons  Saturated FA
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Unsaturated FA
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This note was uploaded on 04/30/2008 for the course BIO 101 taught by Professor Wetherbee during the Fall '08 term at Rhode Island.

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Macromolecules II - Polysaccharides Structure: - 100's,...

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