While the dna in a human skin cell was being replicated, a single base was miscopied. what will be the most likely result of this for the cell in which it happened? (2 points)
all the proteins the cell creates from the miscopied strand will do different jobs than the old ones.
any miscopied dna will be replaced with an accurate dna copy once the cell divides. both new dna strands will end up together in a new cell, and the inaccurate one will be discarded.
if the new sequence codes for the same amino acid as the original cell, it will function normally.

Any miscopied DNA will be replaced with an accurate DNA copy once the cell divides.

Explanation:

Once the cell enter cell division, there are checkpoint to repair damaged or mismatched DNA.  Checkpoint activation pauses the cell cycle to provide the cell enough time to repair the damage before continuing to divide. DNA damage checkpoints occur at the G1/S and G2/M boundaries. The DNA polymerase will correct a mismatch or miscopied base on the strand before continuing with replication.Through this, the enzyme prevents mutations that would likely happen.

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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it's c. (to reduce the greenhouse effect/carbon gasses)