Elementary cell membrane is composed of phospolipid molecules that form a bilayer that is in its care water repellent (hydrophobic) and on its periphery water friendly (hydrophilic).
Through the membrane protrude membrane proteins like the membrane channels. They are hydrophobic in their middle part and hydrophillic on the periphery, where they face on one side the cell exterior and on the other side the cell interior.

Welcome to this educational aid for teachers and students of biology or medicine!

It contains drawings, images and virtual reality worlds enhancing the understanding of biological structures.

You need Java running on yor computer in order to see the virtual reality worlds.

Note: In Contents panel (Sh) means Shout3D technique (Java required) while (Vr) means VRML technique (VRML plugin required)