Ions are transported across membranes using which requires

To complete the statement above:

Ions are transported across membranes using channel-mediated facilitated diffusion; which requires kinetic energy.

The channels can be opened by the requirements of the cell. Transmembrane proteins, called transporters, utilize the vitality of ATP to drive particles or little atoms through the layer against their focus angle.

When you are making a guess you are forming a hypothesis

They are all in a iving organism.