Concept
Version 9
Created by Boundless
Cells as the Basic Unit of Life

Various Cell Types
(a) Nasal sinus cells (viewed with a light microscope), (b) onion cells (viewed with a light microscope), and (c) Vibrio tasmaniensis bacterial cells (seen through a scanning electron microscope) are from very different organisms, yet all share certain characteristics of basic cell structure.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Introduction. October 16, 2013."
http://cnx.org/content/m44404/latest/Figure_04_00_00.jpg
OpenStax CNX
CC BY 3.0.