18. Which of the following is more likely to inhibit regulatory subunits of an allosteric enzyme? (A) A competitive inhibitor (B) A non-competitive inhibitor (C) An irreversible inhibitor (D) All of these are equally likely to inhibit a regulatory subunit

3. In the sodium-potassium pump (A) sodium is transported out of the cell and potassium into the cell, both against concentration gradients (B) sodium is transported into the cell and potassium out of the cell, both against concentration gradients (C) sodium is transported out of the cell and potassium into the cell, both in the same direction as concentration gradients (D) sodium and potassium are both transported out of the cell against concentration gradients

18. Which of the following is more likely to inhibit regulatory subunits of an allosteric enzyme?
(A) A competitive inhibitor
(B) A non-competitive inhibitor
(C) An irreversible inhibitor
(D) All of these are equally likely to inhibit a regulatory subunit

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