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I find the implied range of cell sizes to be amazing. (Informally, it's tempting to view all microscopic biological entities as being similarly small; they're

I find the implied range of cell sizes to be amazing. (Informally, it's tempting to view all microscopic biological entities as being similarly small; they're not.) Here's a cool visual of relative cell sizes and scale: http://learn.genetics.utah.edu/content/begin/cells/scale/ http://learn.genetics.utah.edu/content/begin/cells/scale/

StavrosK 14y ago
The amoeba is as big as a grain of salt? It must be visible with the naked eye, then, no? I had no idea it was that big...
- jacobolus 14y ago
  Yes, many kinds of amoebas are visible to the naked eye. Some grow to several millimeters long.
  - einhverfr 14y ago
    I used to have a culture of paramecia and noticed I could see a paramecium with the naked eye.