KEY TAKEAWAYS •
Modern cell theory began with Robert Hooke’s identification of cells.
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The germ theory of disease replaced the miasma theory, which differ in their explanation of what causes disease.
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There are some features, such as a cell membrane, ribosomes, genetic material, and cytoplasm, that are similar in eukaryotic and prokaryotic cells.
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Prokaryotes lack membrane-bound organelles but do have some degree of compartmentalization.
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Eukaryotes have a number of membrane-bound organelles and a cytoskeleton, which is different than prokaryotic cells.
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Prokaryotes have nucleoids, while eukaryotes have membrane-bound nuclei containing DNA.
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