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