Genetics problem (DNA synthesis rate)

[JJShadow]

Hi to all. I'm trying to solve this genetic problem but there no is way I can do it, so I hope anyone can help me (sorry for my bad English):

 

"We expose 10⁹ yeast cells (in exponential growing) to a 10 minutes pulse of nucleotides labeled with phosphorus-32 in the alpha phosphate, with an specific activity of 80 Ci/mol (ci = curium = 2,22x10¹² dpm). After the pulse, we purify all the DNA, which has become radiactive with an activity of 55000 dpm. Using this information, calculate the DNA synthesis rate of each yeast cells in nucleotides / second"

 

Thanks you!

Edited March 13, 2011 by JJShadow