Cell X Has a Resting Potential of -80 MV

question 159

Multiple Choice

Cell X has a resting potential of -80 mV. If a ____ opens and causes the potential to change 10 mV, the resulting potential will be ____.

• A) Na⁺ channel; -90 mV
• B) K⁺ channel; -70 mV
• C) Ca²⁺ channel; -70 mV
• D) Cl^- channel; -70 mV
• E) Ca⁺² channel; -90 mV

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Definitions:

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Two-factor Theory

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