Biology / Unit 4 Bio 0779 short lesson, about 20 seconds
Ion Channel-Linked Receptors
Captions available
The idea
An ion channel-linked receptor opens a membrane channel when its ligand binds, letting specific ions flow through down their concentration gradient.
In practice
A ligand binding a gated channel triggers a conformational change that lets sodium or calcium ions pass through until the ligand releases.
Where people slip
The channel stays closed by default — it opens only while the ligand remains bound, not permanently once triggered.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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