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9 Cards in this Set
- Front
- Back
Condensation Reactions in Lipids |
- Glycerol and 3 fatty acids undergo condensation to form triglycerides - The 3 hydroxyl groups on glycerol molecule bonds with the 3 carboxyl group on the fatty acids - 3 Water molecules are released - The bond b/w the glycerol and fatty acid chains is called an ester linkage
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Hydrolisis Reactions in Lipids |
- Reverses the condensation reactions - Triglycerides are returned to 3 fatty acids and a glycerol backbone - Breaks down phosphate into 2 fatty acids and a glycerol backbone |
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Triglycerides: Glycerol |
- 3 Carbon chain with 3 hydroxyl group - Can form bond with 3 fatty acid chains - One fatty acid will bind at each hydroxyl group - ( glycerol backbone and 3 fatty acids) |
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Triglycerides: Fatty Acid Chains |
- Long, short, saturated or unsaturated - Each fatty acid has carboxyl group (COOH) - Saturated; straight chains, single bonds and solid at room temperature - Unsaturated; contain double bonds, kinked, liquid at room temperature |
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Phospholipids |
- Glycerol backbone, phosphate group, nitrogen group and two fatty acid chains - Head contains the glycerol backbone, phosphate and nitrogen group (is polar and hydrophilic, water soluble) - Tail contains the two fatty acid chains (is non-polar and hydrophobic) - Cell membrane is made of phospholipid bilayer |
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Sterols |
- Contain 4 hydrocarbon rings and various functional groups (OH, C=O) - Also called steroids - Cholesterol keeps membrane fluid like - Various sex hormones are sterols - Are hydrophobic |
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Waxes |
- Formed by condensation reaction b/w long-chain fatty acid (carboxyl group) and long- chain alcohol (hydroxyl group) - Waxes are hyrdrophobic |
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Triglyceride Structure |
- Glycerol backbone and 3 fatty acid chains |
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Phospholipid Structure |
- Hydrophilic head (phosphate, nitrate [choline] and glycerol) - Hydrophobic tail (two fatty acid chains) |