Lipids (Fats) Notes A group of biological molecules composed mostly of __________________, _________________, and ___________________. Lipids are insoluble in water, serve as a source of ___________________, and are a component in ____________________________. Functions of Lipids: energy storage __________________________ Structure and _________________________ Elements that make up lipids: ______________, ____________, ____________ A carbohydrate, has ______________________________________________ _____________________________________________________________. EX: _______________________ On the other hand, lipids have _______________________________________ _____________________________________________________________. EX: _______________________ The common categories of lipids are ________________________________, ___________________________, and ______________________________ Triglycerides are made of 2 subunits: _________________ and _____________ What does a triglyceride’s structure look like? Structure of glycerol, a compound that reacts with fatty acids The _________________ on glycerol can react with the _________________ on fatty acids, causing the fatty acid to join to the glycerol, and releasing water. The glycerol and 3 fatty acids react to form _____________________. General structure of fatty acids: a type of lipid Fatty acids are carboxylic acids with a long hydrocarbon tail. In the general structure, "R" represents the large hydrocarbon tail. R generally represents a hydrocarbon chain of 3 to 19 C atoms. Saturated vs. Unsaturated Saturated fats have all _____________ bonds. Unsaturated fats have at least one ____________ bond. Notes from animation on triglycerides…