Each of the Following Is True for the Mechanism of the Na⁺/K⁺

question 35

Multiple Choice

Each of the following is true for the mechanism of the Na⁺/K⁺ ATPase pump except

• A)the E2 conformation is open to the outside of the cell and has high affinity for K⁺.
• B)the E1 conformation is open to the inside of the cell and has high affinity for Na⁺.
• C)Na⁺ triggered phosphorylation of the pump stabilizes the E2 conformation.
• D)K⁺ triggered dephosphorylation of the pump stabilizes the E2 conformation.
• E)Each E1-E2 cycle pumps 3 Na⁺ ions out and 2 K⁺ ions in.

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