A competitive inhibitor: Please choose the correct answer from the following choices, and then select the submit answer button. binds to the active site on the enzyme, blocking substrate molecules from the site. binds to any part of the enzyme, altering its shape, and blocking its ability to bind with substrate. binds to the active site on the substrate, blocking enzyme molecules from interacting with the site. causes destruction of the enzyme, inhibiting the reaction. causes destruction of the substrate, inhibiting the reaction.

Explanation:

Competitive inhibitor is the one which binds to the active site on the enzyme, blocking substrate molecules from the site

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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