Prototaxites, an extinct organism from the Devonian period, has been thought to be a fungus since its first fossil was ...

But it cannot grow or make baby cars. So, a car is not alive. All living organisms are made up of cells. Cells are the building units of life - the basic building blocks of all animals and plants.

And the organism itself. Cells are the building blocks of life. Tissue is made when specialised cells with the same function group together. For example, millions of muscle cells make up muscle ...

The Portuguese man-of-war is a siphonophore, an animal made up of a colony of organisms working together. The man-of-war comprises four separate polyps. It gets its name from the uppermost polyp ...

By controlling protein synthesis within each cell, the genes that make up DNA control the life of the entire organism. Although the outcome of protein synthesis can be involved and quite complex ...