Inorganics, water, and a few other biomolecules are transported through the cell membrane viabiological membranes. Two distinct membrane proteins control the transportation flow. Transporters and channels are what they are. Through the diffusion process, channels generate small hydrophilic holes across the membrane, allowing such molecules to flow.
Specific energy-driven pumps are generated by ion gradients across the cell membrane and are discharged through and channels. The pumps could not keep up with the huge ion fluxes that were going through the open channel.
A channel is a pore that runs across the cell membrane and allows ions to pass freely. On the other hand, Pumps use anATP-dependent mechanism to close and open pores.