2.  Also known as fats  Made of carbon, hydrogen, and oxygen  When your body breaks down lipids, it turns it into fatty acids and glycerol

3.  Muscles use this as a source of energy  2 types: › Saturated › Unsaturated

4.  Your body uses this to make glucose (which is the body’s main source of fuel)  Turns into body fat if not used

5.  Has lots of cholesterol  Comes from animal products (meat, dairy, etc.)  Is solid at room temperature  Is the worse of the two for you to have

6.  Vegetable oils  Is liquid at room temperature  Is healthier for you to have

7.  Fats  Phospholipids  Waxes  Steroids

8.  Made of glycerol & 3 fatty acids (triglyceride)  Function: › Keeps animals warm, provides long-term energy, protects internal organs

9.  Constructed of a head and 2 tails  Function: › Main part of a cell membrane

10.  Long chains of fatty acids linked to long chains of alcohols  Function: › Repels water › Important in water-proofing

11.  4 fused carbon rings  Function: › Act as chemical signals  estrogen / testosterone