When thinking about an action potential which one of the following statements is TRUE? O a. If a stimulus is strong enough, hyperpolarization causes membrane polarity to be completely reversed, and an action potential is initiated. O b. lonic conditions are restored after repolarization by the actions of the sodium-potassium (Na*-K*) pump, whereby two Na+ ions are ejected for every three K+ ions carried back into the cell. O c. A stimulus changes the permeability of a "patch" of the membrane, and sodium ions (Na+) diffuse rapidly into the cell. O d. During repolarization, sodium ions diffuse rapidly into the cell. e. The external side of the resting membrane is slightly negative, d its internal side is slightly positive.
When thinking about an action potential which one of the following statements is TRUE? O a. If a stimulus is strong enough, hyperpolarization causes membrane polarity to be completely reversed, and an action potential is initiated. O b. lonic conditions are restored after repolarization by the actions of the sodium-potassium (Na*-K*) pump, whereby two Na+ ions are ejected for every three K+ ions carried back into the cell. O c. A stimulus changes the permeability of a "patch" of the membrane, and sodium ions (Na+) diffuse rapidly into the cell. O d. During repolarization, sodium ions diffuse rapidly into the cell. e. The external side of the resting membrane is slightly negative, d its internal side is slightly positive.
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter39: Information Flow And The Neuron
Section: Chapter Questions
Problem 5TYK: The major role of the Na+/K+ pump is to: a. cause a rapid firing of the action potential so the...
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Can anyone help with number 9 question?
Transcribed Image Text:When thinking about an action potential
which one of the following statements is
TRUE?
O a.
O b. lonic conditions are restored after
repolarization by the actions of the
sodium-potassium (Na*-K*) pump,
whereby two Na+ ions are ejected
for every three K+ ions carried back
into the cell.
O c.
If a stimulus is strong enough,
hyperpolarization causes membrane
polarity to be completely reversed,
and an action potential is initiated.
O e.
A stimulus changes the permeability
of a "patch" of the membrane, and
sodium ions (Na+) diffuse rapidly
into the cell.
O d. During repolarization, sodium ions
diffuse rapidly into the cell.
The external side of the resting
membrane is slightly negative, d
its internal side is slightly positive.
T
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