Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 2

QUANTITATIVE As Cells Get Larger... Consider three spherical cells with diameters of 2 µ m, 10 µ m, and 20 µ m.
(a)For each cell, calculate the total volume using the equation V = 4 r 3 /3.
(b)Now calculate the surface area of each cell using the equation A = 4 r 2.
(c)Finally, determine the surface area/volume ratio for each cell.
(d)How does the surface area/volume ratio for a cell change as the cell increases in size
(e)Why does it change in this manner