Two cells grow over a period of time, and their dimensions are measured under a microscope. Their surface areas and volumes are calculated and shown in the table below. Which of the following explains which cell will exchange materials with its environment more slowly? Cell A Cell B
Initial Surface Area (in square units) 10 10
Initial Volume (in cubic units) 2 2
Final Surface Area (in square units) 15 28
Final Volume (in cubic units) 4.5 10
Cell A, since it now has a greater surface-area-to-volume ratio than Cell B
Cell A, since it now has a smaller surface-area-to-volume ratio than Cell B
Cell B, since it now has a greater surface-area-to-volume ratio than Cell A
Cell B, since it now has a smaller surface-area-to-volume ratio than Cell A