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Structure of a cell

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Scale of cellsCell theoryIntro to cellsMicroscopy
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Introduction to cellsGet 3 of 4 questions to level up!
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Cell sizeProkaryotic and eukaryotic cellsProkaryotic cellsIntro to eukaryotic cellsPlasma membrane and cytoplasmNucleus and ribosomes
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Prokaryotic and eukaryotic cellsGet 3 of 4 questions to level up!
Basic characteristics of the cellGet 3 of 4 questions to level up!
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Endoplasmic reticulum and Golgi bodiesEndomembrane systemThe endomembrane systemMitochondriaMitochondria and chloroplastsThe cytoskeletonThe cytoskeleton
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Eukaryotic cell structuresGet 3 of 4 questions to level up!
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Extracellular matrixPlant cell wallsThe extracellular matrix and cell wallCell-cell junctionsOverview of animal and plant cells
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About this unit

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.
Biology is brought to you with support from the
Amgen FoundationAmgen Foundation