If the Potassium Ion Concentration Is 3 MM Outside and 88

question 9

Multiple Choice

If the potassium ion concentration is 3 mM outside and 88 mM in the cytoplasm, and potassium selective channels open with the membrane potential at -85 mV, which will occur?

• A) The net flux of potassium ions will be inward.
• B) The net flux of potassium ions will be outward.
• C) There will be no net flux of potassium ions-it will be equal in and out.
• D) There will be no movement of potassium ions across the membrane.
• E) Potassium channels will inactivate.

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