Which of the Following Statements Is True Regarding Ion Channels

question 35

Multiple Choice

Which of the following statements is true regarding ion channels?

• A)Protein structure studies indicate a flexible pore size capable of transporting ions of varying size.
• B)Ions require waters of hydration for sufficient passage through the entire channel.
• C)Ion channels maintain sodium and potassium ion concentrations that are greater in the extracellular fluid than in the cytosol.
• D)Channel rigidity minimizes energy states for appropriately sized ions.
• E)None of the above is true regarding ion channels.

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