Curious about the size of a cell?


You are made up of about 70 trillion cells. 70 TRILLION!!! It’s impossible to fathom the magnitude of that number. (But even more mind-blowing is that you are also made up of 700 trillion bacterial cells!!)

But it might help to be able to visualize the size of a single cell… of which you have 70 trillion… which is crazy!… but good because you are a complicated organism with lots to do.

Thanks to University of Utah’s Genetic Science Learning Center for this wonderful resource. You can see the size of a cell, the components inside a cell, an egg & sperm and some microorganisms, all the way down to a carbon atom… in which there are electrons, protons, neutrons, quarks, leptons, bosons and maybe even the entire galaxy of a distant planet.

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