Answer:
Therefore, potassium can diffuse through the membrane but sodium cannot. Because the membrane is permeable to potassium ions, they will flow down their concentration gradient; i.e. towards the outside of the cell.
Explanation:
If it's the same diagram as mine then it should be the control center of the cell
Answer:
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Explanation:
Answer:
A researcher discovers a fossil of what appears to be one of the oldest-known multicellular organisms. The researcher could estimate the age of this fossil based on <em>the amount of uranium-238 in volcanic layers surrounding the fossil.</em>