sentence: Steroids are lipids that have a special chemical structure.
sentences_before: Cholesterol' is a molecule that is found in animal cells and body fluids. Cholesterol is not found in plant sources. It is a type of lipid which is a fat or fat-like molecule. Cholesterol is a soft waxy substance. Cholesterol is a special type of lipid that is called a steroid.
sentences_after: This structure is made of four rings of carbon atoms. Cholesterol is found especially in animal fats.
concept_name: steroid
headings: Cholesterol
categories: Biochemistry Macromolecules