Which Statement Describing the Mechanisms by Which Sodium Ions Pass

question 26

Multiple Choice

Which statement describing the mechanisms by which sodium ions pass through cell membranes is not correct?

• A) Groups of proteins form ion channels for sodium ions.
• B) Sodium ions can be transported by Na⁺-K⁺ pumps.
• C) Membrane proteins pump sodium ions through the membrane.
• D) Sodium ions form complexes with nonpolar ligands that can diffuse through the membrane.
• E) Sodium ions can diffuse directly through the membrane.

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