A euglena is a microorganism that can either make its own food using energy from the Sun, or it can feed on other organisms to get the nutrients and energy that it needs.
Which of the following statements is demonstrated by the euglena?

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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