# Calculate the fraction of the volume of E.coli is DNA

A cell of E. coli contains about 10-14 g if DNA. A DNA strand (modelled as a cylinder) is 20 Å in diameter and has a mass of about 2 x 10^6 daltons for each µ m of length. What fraction of the volume of E. coli is DNA?

(1 dalton = mass of 1 hydrogen atom, therefore there are 6.025 x 1023 daltons/g).

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The expert calculates the fraction of the volume of E. Coli in DNA.

$2.19