BiochemistryMetabolism and Other Biochemical Reactions |
What is a lipid? |
Lipids are a broad class of nonpolar or amphiphilic molecules including fatty acids, vitamins, sterols, and waxes, among others. An amphiphilic molecule is one that has both hydrophilic and hydrophobic groups, meaning that some parts of the molecule interact favorably with polar groups while other parts do not.