Which of the Following Statements Is Most Correct Regarding the Sodium-Potassium

question 46

Multiple Choice

Which of the following statements is most correct regarding the sodium-potassium pump?

• A) The ATP driven pump operates as a symport system.
• B) The pump transports 3 potassium ions into the cell for every 2 sodium ions it transports out of the cell.
• C) Phosphorylation of the ATPase transport protein causes a conformational change resulting in the expulsion of sodium into the extracellular fluid.
• D) When potassium binds to the ATPase transport protein, the protein is phosphorylated.
• E) It is a secondary transport pump.

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