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1.2C Lipids

TermDefinition
lipids include steroids such as the sex hormones and cholesterol, which serve very important functions in the body; fats and oils, which act as energy storage molecules in organisms, are also lipids; lipids are unable to dissolve in water because they are neutra
neutral fats Fats lack charge on their molecules and are thusly neutral.
phospholipids phospholipids are constructed similar to neutral fats (triglycerides), except a phosphate group takes the place of one of the fatty acids; the main constituent of the plasma membrane; hydrophilic (water-loving) heads of the molecule face the outsides and
saturated fatty acids Saturated fatty acids have the maximum number of Hydrogen atoms on the chains and have no double bonds.
triglycerides triglycerides are made of one glycerol and three fatty acid molecules; the fatty acids are long chains of carbon atoms with hydrogen atoms attached, and end with the acidic group COOH
steroids are composed of a backbone of 4 fused carbon rings and are formed from a cholesterol precursor in the cells.
unsaturated fatty acids Unsaturated fatty acids have some double bonds between two carbon atoms where there is less than 2 hydrogen atoms attached
Created by: gwynneth