COPII Vesicle Formation

This animation shows the formation of a COPII vesicle. These vesicles transport proteins from the endoplasmatic reticulum to the Golgi apparatus. The Nobel Prize in physiology or medicine 2013 was awarded for the discovery of this process.

Bacterial Chemotaxis

Chemotaxis is the movement of an organism in response to a chemical stimulus. This is important for bacteria to find food by swimming toward the highest concentration of food molecules, or to flee from poisons. This short animation shows a group of bacteria swimming towards a sugar crystal.