Which of the following best explains why the plasma membranes of all cells exhibit a negative resting potential? (A) The membrane is mostly permeable to Cl", and the Cl- gradient favors its diffusion out of the cell. (B) The membrane is mostly permeable to K*, and the K* gradient favors its diffusion into the cell. (C) The membrane is mostly permeable to K*, and the K* gradient favors its diffusion out of the cell. (D) The membrane is mostly permeable to Na*, and the Na* gradient favors its diffusion into the cell. (E) The membrane is mostly permeable to Na*, and the Na* gradient favors its diffusion out of the cell.
Which of the following best explains why the plasma membranes of all cells exhibit a negative resting potential? (A) The membrane is mostly permeable to Cl", and the Cl- gradient favors its diffusion out of the cell. (B) The membrane is mostly permeable to K*, and the K* gradient favors its diffusion into the cell. (C) The membrane is mostly permeable to K*, and the K* gradient favors its diffusion out of the cell. (D) The membrane is mostly permeable to Na*, and the Na* gradient favors its diffusion into the cell. (E) The membrane is mostly permeable to Na*, and the Na* gradient favors its diffusion out of the cell.
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Which of the following best explains why the
plasma membranes of all cells exhibit a negative
resting potential?
(A) The membrane is mostly permeable to Cl",
and the Cl gradient favors its diffusion
out of the cell.
(B) The membrane is mostly permeable to K*,
and the Kt gradient favors its diffusion into
the cell.
(C) The membrane is mostly permeable to K*,
and the K* gradient favors its diffusion out
of the cell.
(D) The membrane is mostly permeable to Na*,
and the Na* gradient favors its diffusion
into the cell.
(E) The membrane is mostly permeable to Na*,
and the Nat gradient favors its diffusion
out of the cell.
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