If the sodium ion concentration is 130 mM outside and 12 mM in the cytoplasm, and sodium selective channels open with the membrane potential at +80 mV, which will occur?
A) The net flux of sodium ions will be inward.
B) The net flux of sodium ions will be outward.
C) There will be no net flux of sodium ions-it will be equal in and out.
D) There will be no movement of sodium ions across the membrane.
E) Sodium channels will inactivate.
Correct Answer:
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Q26: Conductance characteristics of a channel can be
Q27: Driving force on a specific ion is
A)
Q28: Under which of the following conditions would
Q29: If the potassium ion concentration is 3
Q30: If the potassium ion concentration is 3
Q32: Increasing the concentration of sodium ions on
Q33: What governs the movement of ions through
Q34: The equilibrium potential depends on
A) the open
Q35: At the equilibrium potential
A) the concentration gradient
Q36: When membrane potential is at the equilibrium
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