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Lipids: Fats, Oils & Waxes. Large and varied group Made up of mostly C & H atoms (O too!) Do not dissolve in water Uses: Energy Storage Waterproofing Structure Hormones. Triglycerides. function to cushion organs, as insulation & in long-term energy storage
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Lipids: Fats, Oils & Waxes • Large and varied group • Made up of mostly C & H atoms (O too!) • Do not dissolve in water • Uses: • Energy Storage • Waterproofing • Structure • Hormones
Triglycerides • function to cushion organs, as insulation & in long-term energy storage • Made of two kinds of molecules • Glycerol • Fatty acids • Saturated Fatty Acid: • Carbons joined by single bonds • Maximum H atoms • Unsaturated Fatty Acid: • At least one double bond between carbons in the fatty acid
Fatty acids with only single covalent bonds between the carbon atoms are referred to as saturated. Fatty acids that contain 1 or more double bonds between carbon atoms are said to be unsaturated. Fatty Acids
What are Trans fats? Source: http://biology.clc.uc.edu/Courses/bio104/lipids.htm
Phospholipids • Building block of cell membrane • Only has 2 fatty acids • 1 phosphate group • Have • Hydrophilic heads • Hydrophobic tails
Steroids • Carbon Skeleton has: • Four interconnected rings • Different groupings of atoms (or functional groups) attached • Cholesterol • Hormones