The students in ms. hill's science class were investigating the properties of water. they placed a piece of celery in a beaker of blue water. the next day, the celery was no longer green, but blue, all the way up to the leaves. what property of water best explains why the blue water moved up the celery stalk? a. bouyancy b. specific heat c. surfece tension d. capillary action

D. Capillary action                                                                  

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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