Lipids Warm up! What do you already know about lipids? Name 3 foods that are high in lipid (ex: fat) What would you like to learn about lipids?

Lipids Fats, oils, waxes Functions: Made of: Long-term energy storage Cell membrane Waterproofing Made of: C, H, O

Lipid Building Blocks Most lipids are composed of three fatty acids bonded to a glycerol molecule This is also known as a triglyceride…see following slides!

LIPID

Check Point Questions! How is the chemical structure of lipids different from carbs and proteins? What are the functions of lipids?

Types of Lipids SATURATED Fats Examples: butter, lard Fatty acids are full of hydrogen No double bonds between C Examples: butter, lard Solid at room temperature Considered “unhealthy” fats

Ex: olive oil, vegetable oil UNSATURATED Fats Double bonds Not “full” of hydrogen Liquid at room temperature Ex: olive oil, vegetable oil Usually liquid Considered “good” fats

Trans fats Man made in a lab Unsaturated, but solid at room temperature Ex: margarine Now known to be unhealthy

Cholesterol

Check Point Questions! What’s the difference between saturated and unsaturated fats? What are trans fats?

Venn Diagram – BIG PAPER! Compare and Contrast Carbohydrates Protein Lipids Include: Structure Function Examples Make it colorful!