Carrier Channel 26.2 Carriers and channels EXTRACELLULAR olute binds Gate is form water soluble paths to carrier through the membrane w暖日k CYTOSOL Figure 26.4 A carrier(porter) transports a solute into the cell by ↓ a conformational change that EX TRACELLULAR brings the solute-binding site from the exterior to the interior while an ion channel is controlled by the opening of a gate(which might in principle be located on either side Solute expo se d/gate opens: ions/23 of the membrane) to cytoso travel through CYTOSOL 消当Figure 26.4 A carrier (porter) transports a solute into the cell by a conformational change that brings the solute-binding site from the exterior to the interior, while an ion channel is controlled by the opening of a gate (which might in principle be located on either side of the membrane). 26.2 Carriers and channels form water soluble paths through the membrane