If you have ever made salad dressing, seen a photograph of an oil tanker spill, or tried to clean a greasy stain with water, then you have likely noticed one of the defining factors of lipids: They do not mix well with water. In our daily lives, lipids provide the delicious richness in ice cream, give carrots their color, lubricate our car engines, and help clean our clothes. They help sea otters’ fur repel water and give a waxy sheen to many plant leaves.
As a group, lipids have many different functions and uses in living cells and organisms, from storing energy to regulating metabolism, signaling hormones, and providing the structure of cell membranes. What do butter, beeswax, and testosterone have in common? They’re all lipids, a type of compound produced by plants and animals that includes fats and oils as well as waxes and steroids.
Scientific Notation and Order of Magnitude.The Case of the Ivory-billed Woodpecker.Santiago Ramón y Cajal and Camillo Golgi.Factors that Control Earth's Temperature.Plates, Plate Boundaries, and Driving Forces.Solutions, Solubility, and Colligative Properties.Y-Chromsome and Mitochondrial DNA Haplotypes.Absorption, Distribution, and Storage of Chemicals.
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