key term - Micelle

Definition

A micelle is a spherical structure formed by lipid molecules in aqueous solutions, where the hydrophobic tails are oriented towards the center and the hydrophilic heads face outward. This arrangement allows micelles to facilitate the absorption of fat-soluble substances in the digestive system.

Related terms

Lipids:

Organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents.

Hydrophilic:

Referring to molecules or parts of molecules that have an affinity for water and can form hydrogen bonds with water molecules.

Hydrophobic:

Describing molecules or portions of molecules that repel water and tend to be nonpolar, preferring to associate with oils or fats instead of water