Structure of a cell

Introduction to cells
Prokaryotic and eukaryotic cells
Tour of a eukaryotic cell
Extracellular structures and cell-cell junctions
Unit test
10 questions

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Unit test
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About Structure of a cell
You, my friend, are made up of cells. Lots and lots of them. Some of them are eukaryotic (human), but many more of them are prokaryotic, thanks to the friendly bacteria of your gut, skin, and other body systems. Jump in to learn more about prokaryotic and eukaryotic cells and the complex and beautiful structures inside of them.