Lipids
Lipids are a diverse group of organic molecules present in the cell. They are always (or mostly) non-polar and hydrophobic, which is one of their key characteristics. In some cases, they are amphipathic (partly polar) as well. 1
They are important structural components of cell membranes and serve as a source of energy storage in the body. Lipids have a wide range of functions in the body, including energy storage, insulation, cushioning of organs, and regulation of cell membrane fluidity.
