7. Materials don't have to cover as much (a.)_________ to reach the center of a small cell and will reach the cell's center more(b.) __________ than in a larger cell. The diffusion rate of the material stays the (c.)________; in a small cell, materials simply reach their (d.)_____________ faster. (use the following terms to complete the statement above: quickly, same, destination, distance)

a.
b.
c.
d.