For example, prokaryotic organisms have sensors ... When a signaling molecule joins with an appropriate receptor on a cell surface, this binding triggers a chain of events that not only carries ...

A long thin 'hair' extends from each cell into the soil increasing the root's surface area. Each root has many thousands of root hairs, which can make the root look furry. Xylem cell They ...

When a cell’s surface area increases, the amount of substances diffusing into the cell increases. As volume and surface area increase, the volume increases faster, so much so that the surface ...