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The DNA of an E coli cell measures 1.4 mm in length, when extended and 20 angstroms in diameter.

a) Calculate the volume of DNA in an E coli cell in cm^3

b) What fraction of an E coli cell is occupied by its DNA?

c) A human cell is typically spherical with a diameter of 20 micrometers. Calculate the volume of a human cell in cm ^3.

  • Chemistry - ,

    1.4 mm = 0.14 cm
    20 angstroms = 20 x 10^-8 cm.
    Use those dimensions to determine the volume.
    Do you know the volume of an E coli cell? Don't you need to know that before b can be answered.
    For c, 20 micrometers = 20 x 10^-4 cm
    Post your work if you get stuck.

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