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The Relative Sizes of Cells

Various types of cells and cellular components are listed below. Based on the diameters of the cells and components (given in parentheses), calculate the number of each that you would expect to find in a single layer that is 0.7 mm in diameter. Assumption: each entity is spherical. Formulas: area of a circle = pi*r^2. pi=3.14

hepatocyte (d=20 micrometer)
mitochondria (d=1.5 micrometer)
actin molecule (d=3.6 nanometer)

Solution Preview

Sample calculation for hepatocytes

Assumption: each entity is spherical. Formulas: area of a circle = pi*r^2. pi=3.14

hepatocyte (d=20 micrometer)

First, calculate the area of the 0.7mm diameter area:

area ...

Solution Summary

Sample calculation for hepatocytes are given.

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