An experiment was designed to determine the effect of nitrates on algae growth. two groups of algae were grown under identical conditions, except one group was watered with a dilute nitrate solution and the other group received water without nitrates. in this investigation, the group of algae grown without added nitrates is known as the?

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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