A molecule will become an ion when which of the following happens? -When the molecule is moving through a semipermeable membrane.
-When the surrounding solution is hypertonic or hypotonic.
-When it loses or gains an electron.
-When a molecule of ATP is present.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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it's unlikely a majority of a large population would agree on issues

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