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How do prokaryotic cells differ from eukaryotic cells?
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Prokaryotic and eukaryotic cells represent the two fundamental types of cellular organization in living organisms. The primary distinction lies in their structural complexity and the compartmentalization of genetic material.12
Key Differences
- Nucleus and Genetic Material: Eukaryotic cells possess a distinct nucleus enclosed by a nuclear membrane that houses their genetic material. In contrast, prokaryotic cells lack a nuclear membrane, and their DNA floats freely within the cytoplasm.12
- Intracellular Organelles: Eukaryotes contain membrane-enclosed organelles, such as mitochondria, chloroplasts, the endoplasmic reticulum, and the Golgi apparatus, which perform specialized functions. Prokaryotes lack these specialized structures; while they perform similar metabolic activities, they do so without membrane-bound organelles.12
- Chromosomes: Eukaryotic cells typically contain multiple linear chromosomes. Prokaryotes generally possess a single circular chromosome (often referred to as a genophore).12
- Cell Division: Eukaryotes undergo mitosis, a complex process ensuring the equal distribution of chromosomes to offspring cells. Prokaryotic cell division is nonmitotic.2
- Size and Complexity: Prokaryotic cells are generally much smaller and exhibit a simpler design than eukaryotic cells, allowing them to grow and divide rapidly.12