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1.2C Lipids
| Term | Definition |
|---|---|
| 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 |
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gwynneth
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