Lipids are a diverse class of biomolecules essential to life processes, encompassing structures like fats, oils, waxes, and steroids. Functionally, they are vital for energy storage, serving as concentrated, long-term energy sources within biological systems. Furthermore, they play a fundamental structural role in cellular organization; phospholipids and cholesterol molecules are critical components of cell membranes, defining their fluidity and permeability. Chemically, lipids exhibit varied structures, including saturated and unsaturated fatty acids, which dictates their physical properties and biological interactions. Their diverse roles extend to signaling, insulation, and the formation of complex cellular boundaries.