What is the purpose of interphase in the cell cycle?What occurs during G1 and G2 in the cell cycle?

During interphase, the cell copies its DNA in preparation for mitosis. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA, and conducts other "normal" cell functions. In G1 the cell grows in preparation for DNA replication, and certain intracellular components, such as the centrosomes undergo replication. In G2 division occur.

Explanation:

answer; i believe that the correct answer is (lung);

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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