How dna polymerase, the double helix structure of dna, and the base-pairing rules work together to produce two identical copies fo the original dna molecule

The identical copies of DNA are produced through a process called DNA replication which takes place through S phase of the cell cycle. DNA replication is an enzyme-mediated process like DNA helicase, primase, polymerase which also uses ATP.

Double helical structure: both the strands of DNA acts as a template for the synthesis of new strands where one acts as a leading strand(3'→ 5') and one acts as lagging strand (5'→3').

DNA polymerase: Binds to the unwinded DNA after the action of helicase and adds nucleotides to the growing DNA chain using ATP. It also exhibits a proofreading mechanism.

Base-pair rule: Given by Chargaff, stated that adenine binds to thymine and guanine binds to cytosine in the complementary strand.

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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the match lol