Synthesis phase in the cell cycle is called so for the synthesis of more

DNA Synthesis occurs in the Synthesis phase of the cell cycle. The DNA is replicated, and goes from one double helix into two. This process is called DNA replication, and it is a semi-conservative process because half of the replicated DNA consists of the spare nucleotide in the cell.

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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b brown mice / white sand dunes