The "selectivity" of a particular ion channel refers to its
A) permitting passage by positive but not negative ions.
B) permitting passage by negative but not positive ions.
C) ability to change its size depending on the ion needing transport.
D) binding with only one type of neurotransmitter.
E) permitting passage only to a specific ion.

Question

Quizplus · Accepted Answer

The selectivity of an ion channel refers to its ability to permit passage only to a specific ion. This means that the ion channel is able to distinguish between different types of ions and only allow certain ones to pass through.

The "Selectivity" of a Particular Ion Channel Refers to Its