The cell membrane’s resting potential (about −70 mV inside with respect to the outside) is due mainly to which of the following mechanisms

saraalalwane

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2022-09-08

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The cell membrane’s resting potential (about −70 mV inside with respect to the

outside) is due mainly to which of the following mechanisms?

The sodium potassium pump.
The diffusion of cations and anions through the membrane along their concentration gradients.
The diffusion of sodium and potassium across the cell membrane.
The presence inside the cell of anions too large to passively cross the cell membrane.

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saraalalwane

2022-09-08

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A: The ATPase pump shifts 3 Na + out of the cell and 2 K + into the

cell. This disparity in positive charge is the major infl uence on the resting

potential.

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