1. BIOCHEMISTRY Lipids

2. Lipids - fats and oils C, H, O (but lack the 2:1 ratio found in carbohydrates) Includes triglycerides, phospholipids and waxes Insoluble in water, soluble in organic solvents

3. Roles Found in membranes Energy source-used as a substrate for respiration and also as a food store Waterproofing Insulation protection

4. Simple Lipids (fats) 1 Glycerol 3 Fatty acids Triglyceride Fatty acids  saturated  unsaturated

5. glycerol

10. Phospholipid - Complex Lipid Phosphate group replaces one of the Fatty Acids Polar head & non-polar tail Main structural component of the cell membrane

11. Cell Membrane