The Resting Membrane Potential (E1)

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Last updated 9:37 PM on 9/8/26
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4 Terms

1
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What is resting membrane potential and its typical value?

Difference in electrical charge across the membrane; resting inside is -65 mV

2
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Why is the inside of a cell negatively charged at rest?

Higher concentration of negative ions and proteins inside, plus more positive ions outside.

3
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Na+-K+pump

Moves 3 Na+ to the outside for every 2 K+ moved to

the inside

Helps keep the inside of the cell negative


4
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How does the Na+-K+pump move ions, and does it require energy?

Ions are pumped against concentration gradients

Requires energy