What are lipids primarily made from?

Lipids are primarily made from carbon, hydrogen, and oxygen. This composition is essential because lipids are a diverse group of organic compounds that include fats, oils, waxes, and certain vitamins, all of which are characterized by their hydrophobic nature. The carbon atoms provide the backbone of the lipid molecules, while hydrogen atoms attach to them, forming long hydrocarbon chains or rings. The presence of oxygen is also critical, as it often appears in functional groups that can affect the properties and reactivity of the lipids.

This combination of elements distinguishes lipids from other biomolecules, such as proteins and carbohydrates, which incorporate nitrogen and have different structures and functions in biological systems. Understanding the elemental composition of lipids helps in grasping how they contribute to cellular structures, energy storage, and signaling in living organisms.