Question

the unicellular spores of the fern ceretopteris richardii are about 100 um in diameter.calculate the surface-area-to-volume ratio of a cube whose sides are 100 um in lenth to approximate the surface-area-to-volume ratio of the fern spore cell

Answer 1

The surface area will be:
S.A. = 6l²
S.A = 6(100 x 10⁻⁶)²

Volume = l³
Volume = (100 x 10⁻⁶)³

Surface area to volume ratio:
[6(100 x 10⁻⁶)²] / (100 x 10⁻⁶)³
S.A : Vol = 6 x 10⁴