Which of the following groups would contain the largest number of organisms

class (only if the answers are class, order, genus, family)

Explanation depending on the questions answers you'd go by the order of the groups. Domain (1st largest), Kingdom(2nd largest), Phylum(3rd largest), Class(4th largest), Order(5th largest), Family(6th largest), Genus(7th largest), Species(last largest)

answer; the correct answer is desert plants;

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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