A stimulus excites the cell membrane, increasing its ion permeability and changing the potential difference.
When a stimulus is detected, the cell membrane becomes excited and more permeable to ions, altering the potential difference across it.
| Front | Why does the potential difference change when a stimulus is detected |
|---|---|
| Back | Cell membrane becomes excited and becomes more permeable and allows more ions the move in and out of the cell which alters the potential difference |
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