14
Lipids
Lipids
Module Lipids are nonpolar compounds They are essential for living Common lipids include: fats, oils, and steroids Lipids are a class of biomolecules whose only common feature is that they are not soluble in water The important functions that lipids perform are:
As structural components of membranes Energy storage and transport As a protective coating Metabolic regulation
Fatty Acids
Fatty acids are longchain monocarboxylic (mono = 1) acids that are the major components of fats and oils Characteristics:
Insoluble in water Contain an even number of carbons (usually 1218) arranged in a straight chain Can contain all single bonds (saturated) or contain some double bonds (unsaturated)
If more than one double bond is present, the fatty acid is called a polyunsaturated fatty acid
Our bodies can MAKE all required fatty acids from the foods we eat except for linoleic acid and linolenic acid (two essential polyunsaturated fatty acids), which must be IN the food we eat (fish, leafy vegetables, vegetable oil, etc.)
Classification of Lipids
1.
Lipids ar...
Lipids - Module 14