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Solutes are not necessarily ions.

Solute transporters and ion channels involve the moving of ions across a cellular membrane. Both a transporter and a channel have the same purpose, but different functions. Ion channels are proteins that open a pore often in the presence of a ligand, or a binding partner, that allows for a free flow of ions through its gap. A transporter is defined much the same, but involves an occluded state, or a state in which the ion is trapped within the protein, and must wait for either side of the protein to open before it can escape.

Technically, the difference between a transporter and an ion channel is very ambiguous as both seem to use very similar pathways. However, for clarity sake, channels are proteins which open a clear tunnel for passage. While transporters utilize stepwise changes in protein conformation which trap the ion and then allow it to move down to the other side of the membrane.

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13y ago
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10y ago

When it comes to Aquaporin proteins, it allows polar water molecules to get past the hydrophobic middle of the cell membrane. Also, when it comes to Ion channels, Membrane proteins create a tunnel through ehich can pass them. However, Ion Channels allow charged ions to get6 past the hydrophobic center.

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Q: When It Comes To Facilitated Diffusion What Is The Difference Between Ion Channels?
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