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If calcium ions, each of which has a charge of +2(Ca²⁺) , moved OUT OF a neuron, and no other ions were moving, what would be TRUE?
1. The area outside the neuron would be become more negatively charged.
2. The concentration of Ca²⁺ inside the cell would increase.
3. The neuron would become more negative.
4. The neuron would become more positive.



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