Vascular cambium, Select one: O A. Composed of parenchyma cells. O B. Has localized, determinate cell growth. C. Produce secondary xylem and secondary phloem. O D. Produce secondary xylem to the inside of stem.​

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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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