Which letter shows a transport protein? DUE IN 5 MINS! A

B

C

D

E

The answer is simple.

Explanation:

B, because this is the only apparent answer. It is being transported from something. I'm sure there's some scientific information to back this up.

The reason I said that is because I'm only in 7th grade, and I'm not yet learning about that in science. But you can't blame me for trying. I'm glad to help out if this is correct, but I'm sorry if this is no help.

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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