zum Directory-modus

Golgi apparatusZoomA-Z

Subject - cell biology

The Golgi apparatus is an organelle found in eukaryotic cells. It is named for the Italian physician Camillo Golgi (1843-1926), who first made this cell structure visible by means of certain stains.

The Golgi apparatus consists of stacks of membrane-bound cavities that are also known as dictyosomes. In images from an electron microscope, it is possible to see a bent structure with concave and convex sides, which serve different functions. The convex cis-side typically faces toward the endoplasmic reticulum and is the area where substances and macromolecules enter the Golgi apparatus by means of transport vesicles, while the concave trans-side serves as their point of departure in new vesicles. In the membrane-bound cavities, protein processing occurs, in particular, the modification of sugar residues that are bound to the proteins.

See also: organelles

Recommended Learning Units

Cell Structure and Cell OrganellesLevel 160 min.

BiochemistryBiological FundamentalsCell Morphology

Cytology is introduced by means of illustrations, animations, and a comprehensive collection of references and selected links.