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    The Relative Sizes of Cells

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    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)

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    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. The cellular components for various cell types are examined.

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