Upload
letitia-lynch
View
218
Download
1
Tags:
Embed Size (px)
Citation preview
Lipids: Fats & Oils
2003-2004
Lipids
2003-2004
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
Waxes2003-2004
Lipids
Function:Stores energy
very concentrated (pure)2 times as much as carbohydrates
Cell membraneForms protection (ex. Waterproofing) insulates body
Structure of Fat
2003-2004
not a chain (polymer) = just a “big fat molecule”
Lipids ExamplesSteroids-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 fatsMost animal fats
solid at room temperature
Limit the amount in your diet
contributes to heart disease deposits in arteries
2003-2004
Unsaturated fatsPlant, vegetable & fish fats
liquid at room temperature
the fat molecules don’t stack tightlytogether
Better choice in your diet
2003-2004
Test for LipidsBrown paper bag test