Question

q4.6. 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? the area outside the neuron would be become more negatively charged. the concentration of ca²⁺ inside the cell would increase. the neuron would become more negative. the neuron would become more positive.

Explanation:

Calcium ions ($Ca^{2+}$) are positively - charged. When they move out of the neuron and no other ions are moving, the neuron loses positive charges. So, the neuron would become more negative. The outside would become more positive as positive ions are moving into it. The concentration of $Ca^{2+}$ inside the cell would decrease as it is moving out.

Answer:

The neuron would become more negative.