Lipids

What are lipids? Contains the element C, H and O Lipid can be either fats, oils or waxes The main biological functions of lipids include energy storage and as structural components of cell membranes (Phospholipid) The ratio of H to O in lipids is 2:1

Function of lipid Store energy Biological membrane Waterproof coverings Hormone: steroid

Structure of Lipid Each lipid is made up of small chemical sub-unit called Fatty Acids and Glycerol

Fatty Acids Consist of a long chain of carbons with a carboxyl group at one end

Glycerol OH C3H8O3

Saturated fats Most animal fats Limit the amount in your diet solid at room temperature Limit the amount in your diet contributes to heart disease deposits in arteries 2003-2004

Unsaturated fats Plant, vegetable & fish fats liquid at room temperature the fat molecules don’t stack tightly together Better choice in your diet 2003-2004

Saturated vs. unsaturated  2003-2004

Lipid Synthesis

Lipid Synthesis

Lipids Synthesis Glycerol and fatty acids can be chemically linked through a procedure which generates a water molecule Therefore, lipids are synthesized by _________________________

Lipids Break Down If Lipids can be formed through Dehydration synthesis, then lipids can be broken by ________________________ Hydrolysis: The splitting of a molecule into two smaller molecules through the addition of water