Solutions
saturated fatty acid A fatty acid in which all carbons in the hydrocarbon tail are
connected by single bonds, thus maximizing the number of hydrogen atoms that can attach to
the carbon skeleton.
fat A lipid consisting of three fatty acids linked to one glycerol molecule; also called a
triacylglycerol or triglyceride.
fatty acid hydrocarbon chain often bonded to glycerol in a lipid (the chain)
trans fat An unsaturated fat, formed artificially during hydrogenation of oils, containing
one or more trans double bonds.
unsaturated fats A fat that is liquid at room temperature and found in vegetable oils,
nuts, and seeds.
, Phospholipids a lipid consisting of a glycerol bound to two fatty acids and a phosphate
group.
Triglycerides an energy-rich compound made up of a single molecule of glycerol and
three molecules of fatty acid.
steroid A type of lipid characterized by a carbon skeleton consisting of four rings with
various functional groups attached.
cholesterol A lipid that forms an essential component of animal cell membranes and acts
as a precursor molecule for the synthesis of other biologically important steroids. travels
through the blood
protein A three dimensional polymer made of monomers of amino acids.
polypeptide A polymer (chain) of many amino acids linked together by peptide bonds.