Regarding ions, which of the following statements is TRUE?
A)Ions are found only on the outside of the neuron until it is activated.
B)Ions have a neutral charge, neither positive nor negative, until they are activated.
C)When a neuron is inactive (or resting), more "plus" charges exist outside the neuron and more "minus" charges exist inside.
D)Ions can be found only inside the neuron, which creates in your brain an electronic charge of about -10 millivolts.

Question

Quizplus · Accepted Answer

Ions have charges (positive or negative) based on their electron/proton balance. In a resting neuron, the inside is negatively charged relative to the outside, due to the distribution of ions like sodium and potassium, which is described by the resting membrane potential. This is why statement C is correct, as it accurately reflects the distribution of charges in a resting neuron.

Regarding Ions, Which of the Following Statements Is TRUE