If You Inserted a Micropipette into a Neuron Without Harming

question 66

Multiple Choice

If you inserted a micropipette into a neuron without harming the cell and pumped in a small quantity of calcium ions, each of which carried two positive charges, how would this affect the membrane potential?

• A)The membrane potential would become depolarized relative to the resting potential.
• B)The membrane potential would become hyperpolarized relative to the resting potential.
• C)There would be no change because calcium does not contribute to the resting potential.
• D)There would be no change because the sodium-potassium pump would remove excess calcium from the cell.

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