Which statement best summarizes why the cell theory was developed over time? A. As new cells evolved they proved the cell theory was inaccurate.
B. The discovery of new evidence resulted in changes to the cell theory.
C. Changes in cell models showed the cell theory was based on opinion.
D. The cell theory was modified with the discovery of every new organelle.

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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im not in connections yet but i might can you some questions. what grade are you in?