For steroids, recognize that although they are varied in function (know examples), they have the same basic structure. What is the structure they have in common?
All Steroids are composed of Four Hydrocarbon Rings, but differ in terms of Functional Group, for example Cholesterol is a Lipid that is a component of Cell Membrane, Testosterone is Male Sex Hormone, Aldosterone is a Hormone that regulates Water Balance, and Estrogen is Female Sex Hormone