diverse group of organic compounds: grouped together because they are HYDROPHOBIC
insoluble in water
will dissolve in nonpolar solvents
not a true polymer; still a macrolecule
glycerol(3-carbon alcohol;each with a hydroxyl group)
fatty acid(contains carboxyl group; long hydrocarbon chain or "tail)
the nonpolar C-H bonds make the chain hydrophobic and insoluble in water
monomer of lipids/fats
covalent bond that links tryglycerides
functions of fats
energy storage(1g of fat stores 2x as much energy as 1g of catbohydrate)!!
cushions vital organs in mammals(ex: kidney)
insulates against heat loss(ex: whales, seals)
2 fatty acids(hydrophobic)
a phosphate group(hydrophilic)
4 fused carbon rings with various functional groups
is preursor to many other steroids(including sex hormones in vertebrates)
common component of cell membranes
can cause atherosclerosis(if have too much)
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