Lipids
- Created by: pcanavan123
- Created on: 06-06-14 14:22
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- Lipids
- triglycerides
- fats- saturated, solid, animals
- glycerol molecule + 3 fatty acids
- bonded by condensation reactions
- released by hydrolysis reactions
- ester bonds
- bonded by condensation reactions
- ester bonds
- oils - unsaturated, liquid, plants
- phospholipids
- glycerol molecule + 2 fatty acid residues + phosphate group
- phosphate causes glycerol end to be polarised = soluble in water/hydrophilic
- fatty acid tails are non-polar = insoluble in water/hydrophobic
- form bilayers
- phosphate causes glycerol end to be polarised = soluble in water/hydrophilic
- form bilayers
- fatty acids
- long hydrocarbon chains with a carboxylic acid group at one end
- saturated
- single bonds only
- unsaturated
- hydrocarbon chain with double bonds
- saturated
- long hydrocarbon chains with a carboxylic acid group at one end
- Functions
- thermal insulating layer in mammals
- buoyancy in marine mammals
- cushioning layer/protection to internal organs
- cholesterol
- hydrocarbon tail + 4 carbon-based rings
- found in cell membranes (hydrophobic)
- hydrocarbon tail + 4 carbon-based rings
- triglycerides
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