Key Takeaways

KEY TAKEAWAYS

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