Which Statement Describing the Mechanisms by Which Sodium Ions Pass

question 71

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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