Lipids: Fats & Oils

Lipids Large biomolecules that are made mostly of carbon and hydrogen with a small amount of oxygen (sometimes Phosphorous).

Lipids Monomer subunits Glycerol and 3 fatty acids Examples fats oils Waxes

Lipids Function: Stores energy very concentrated (pure) 2 times as much as carbohydrates Cell membrane Forms protection (ex. Waterproofing) insulates body

Structure of Fat not a chain (polymer) = just a “big fat molecule”

Lipids Examples Steroids -structure is a series of connected hexagonal rings. Cholesterol, hormone, cortizone. Triglyceride - glycerol with 3 fatty acids; fats in food, associated with cholesterol. Phospholipid - glycerol with 2 fatty acids; make up cell lipid bilayer membrane. Fats : insulates, stores energy, solid at room temperture Oils - liquid at room temp.

Saturated fats Most animal fats solid at room temperature Limit the amount in your diet contributes to heart disease deposits in arteries

Unsaturated fats Plant, vegetable & fish fats liquid at room temperature the fat molecules don’t stack tightly together Better choice in your diet

Test for Lipids Brown paper bag test