Biology / Unit 2 Bio 0343 short lesson, about 20 seconds
Channel Proteins
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The idea
A channel protein forms a hydrophilic pore for a specific substance, staying open at all times or gated to open on condition.
In practice
An aquaporin is a channel protein that lets water cross the membrane at a very high rate.
Where people slip
A channel protein is specific to one substance, or a narrow set — not whatever fits.
Your place on the trail
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