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Estimate the number of cells in​ a(n) 74​-kilogram ​(163​-pound) ​person, assuming the human body is​ 100% water​ (actually it is 60-70% ​water) and that 1 liter of water weighs 1 kilogram. cells per person

 Dec 7, 2019
 #1
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The average cell in the human body weighs about 1 nonogram [10^-9 grams]. Or 1 gram =10^9 cells.

 

So, 74 kilograms  x  1,000 grams x 10^9 cells =74 x 10^12 cells. But, because there are dozens of different types of cell in the human body, the actual number is about 1/2 the above figure or about 37 x 10^12 cells.

 Dec 7, 2019
 #2
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Haha...assuming the body is 100% water (as you asked)...the number of cells is ZERO !

 Dec 8, 2019

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