5. Molecule Cis created when molecules A and B collide. Which line represents this reaction WITH an enzyme present? l
a. The solid line
b. The dotted line

c. Both lines represent the reaction with an enzyme present
d. Neither line represents the reaction with an enzyme present

Dotted line

Explanation:

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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