1. LIPIDS --- Fats & Oils

2. LIPIDS include: fats oils cholesterol phospholipids

3. Function: energy storage fats and oils are a source of stored chemical energy. Animals - fats Plants - oils

4. Structure cell membranes are composed of phospholipids

5. Protection: insulates body ---think whale blubber! cushions organs &

6. Oil Water A lipid is a nonpolar molecule that does not dissolve in water.

7. Lipids: composed mostly of carbon and hydrogen.

8. Lipids have a higher ratio of carbon and hydrogen than carbohydrates, so they store more energy per gram. Fats have more energy per gram than carbohydrates.

9. Some lipids are composed of fatty acids. A fatty acid is a long unbranched carbon chain—(usually 16 to 18 H-C-H).

10. FATS & OILS: Triglycerides Fats and oils are composed of 1 glycerol and 3 fatty acids.

11. Saturated fatty acid: all single bonds C-H Unsaturated fatty acid: contains double bonds

12. Saturated Fats: animal fats solid at room temperature contributes to heart disease deposits in arteries Limit the amount in your diet

13. Unsaturated Fats: Plant, vegetable & fish fats liquid at room temperature Better choice in your diet

14. Phospholipids: 1 phosphate 1 glycerol, 2 fatty acids