Respuesta :
Ion transport or active transport depending on which situation you have.
Answer:
Facilitated diffusion.
Explanation:
It's also called passive transport, this refers to the process of transporting molecules or ions across a membrane. The passive name is given to it, because for this process chemical energy, like ATP, is not required. That's the difference between active and passive transportation.
Also, ions are only involves in a facilitated diffusion.
