Is it the cell membrane that only the plant cell has or the cell wall?

Only plants cells have cell walls and chloroplasts. Both plant and animal cells have cell membranes.

chemical because it warmed up which involves temperature and it bubbled which includes changing

mark me brainiest

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.  

read more on -