zum Directory-modus


In general, a membrane is a barrier layer that has varying degrees of permeability for particles of different sizes.

Subject - analytical chemistry

Technical membranes are filters that allow for the separation of particles in the 0.1-10 µm size range.

Subject - cell biology

Biological membranes (cell membranes) are flexible double layers with thicknesses of 6-10 nm that surround all cells and many of their 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.