The amino group that is removed from an amino acid during deamination is converted to the less toxic form of

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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i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

thats not a question