How Does an Ion Channel Exert Its Specificity for One

question 132

Multiple Choice

How does an ion channel exert its specificity for one ion and not another?

• A) It is a simple matter of charge and ionic size.
• B) The ion channel hydrates ions as they pass through.
• C) The ion channel makes use of aquaporins.
• D) There are recognition sites in the ion channel.
• E) The ion lets go of its water and is attracted to a channel pore protein.

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