Wednesday
August 20, 2014

Homework Help: chemistry

Posted by Janae on Monday, September 7, 2009 at 10:31pm.

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

How would I find the fraction?
If I knew the volume of an E coli cell, would I divide that by the volume of DNA in an E coli cell?

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

I don't understand how you can calculate the volume without the length of the human cell. I tried looking it up, but I get varied answers since cells vary in size.

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