Growing cells

Biology Level 2

Which of the following statements is true for a spherical cell?

Note: A version of this questions appeared in the 2002 AP Biology Exam

The surface-to-volume ratio is independent of the diameter As diameter decreases, the surface-to-volume ratio increases As diameter increases, the volume decreases As diameter decreases, the surface-to-volume ratio remains constant

Owen Yin by Owen Yin , 23, Canada

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3 solutions

Helen Bergstrom
Aug 18, 2015

Volume scales with r 3 r^3 whereas surface area scales with r 2 r^2 . Thus as r r decreases, surface/volume increases.

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Muzzammal Alfath
Jul 5, 2015

Maybe we can use formula Volume/Surface=(4/3)phi R^3 / 4phi R^2= R/3. So when the diameter decreases, the surface-to-volume ratio increases

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Pradeep Tripathi
Nov 1, 2018

I think that the question maker made this question for slow learners. So easy!!!

Just use dimensions for volume and area, you will get the answer.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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