## Campbell Biology (11th Edition)

Published by Pearson

# Chapter 6 - 6.2 - Concept Check - Page 102: 2

#### Answer

It sounds like the cell is very long and thin, which would lead to a greater surface area-to-volume ratio than for the middle cube in Fig. 6.7 but not as much as the short-and-thin cube at the left end of Fig. 6.7. The cell in question would have 502 square units of area and 125 cubic units of volume, and a ratio of ~4 units, which agrees with the prediction (see Fig. 6.7).

#### Work Step by Step

The cell in question would have 125 square units of area for each of the four long sides (draw a cube and see that each of these sides is 125 units long and 1 unit tall) and 2 square units for both of the two ends, each one being unit tall and one unit long, for 502 square units total. The volume is 125x1x1 cubic units=125 cubic units. Divide the surface area by the volume to get the ratio (502\125=4.016), and compare with Fig. 6.7.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.