Whereas primary cilia have relatively little additional structure, motile cilia have both a central doublet of microtubules as well as inner and outer dynein arms and radial spokes, which are all ...

Neutron stars are very small and dense stars, where roughly half a million earth masses of material are squeezed into a city-sized volume with a radius of 10 km. They are mostly composed of ...

A model showing how metallic bonds are formed - the first diagram shows the outer electrons in their atoms, and the second diagram shows that the electrons have become delocalised ...