1. Lipids Large non-polar organic molecules that do not dissolve in water.

2. Lipids Overview • They are large organic molecules • They contain carbon, hydrogen, and oxygen • Stores fats as long term energy • Contains lots of calories 2x the amount of carbohydrates • Building blocks of lipids: 3 Fatty acids and one glycerol = a lipid

3. Present Elements • C, O, H (carbon, hydrogen, oxygen) Carbon Atom Hydrogen Atom

4. Building Blocks The Monomer of a lipid is a glycerol and 3 fatty acid molecules • Consists of 3 fatty acids & glycerol also know as triglycerides (polymer) • Glycerol & • 3 Fatty Acids

5. Functions of a lipid • Stores energy long term • Forms membranes around our cells called a phospholipids bilayer • Lipids provide insulation in your body and they protect your organs • Steroids and Hormones like testosterone, progesterone and estrogen. • Cholesterol is a lipid it is important in cell membranes

6. Function Pictures Lipid Membrane Example of a hormone Insulation

7. More facts Examples • A lipid is also known as a Polymer • Also known as: triglyceride, fat, oil, wax: • Types of lipids • saturated fat • Unsaturated fat • Polyunsaturated fat • Trans fat • Waxes or oils • Cholesterol • Hormones: estrogen/testosterone • Lipids are high in calories because they yield a lot of ATP when broken down.

8. Examples of the types Lipids saturated Trans fat unsaturated