The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell. Cells also maintain a higher concentration of potassium ions and organic acids on their inside.
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DNA replicates before a cell divides to give a complete set of genetic instructions to each daughter cell.
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3 and 4 are most closely related.
5 and 6 are also most closely related.
Answer:
It's called zero rate of change
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