Define gated ion channels
A) Gated ion channels are pumps in the plasma membrane for specific ions.
B) Gated ion channels allow water to pass through the plasma membrane for osmotic balance.
C) Gated ion channels allow all ions to enter a cell but do not allow any ions to exit a cell.
D) Gated ion channels do not allow any ions to enter a cell but allow all ions to exit a cell.
E) Gated ion channels are channels that open or close in response to specific stimuli.
Answer: E
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