1. Size: Bacteria are significantly smaller than eukaryotic cells. A typical bacterium is around 1-10 micrometers in diameter, while a eukaryotic cell is usually 10-100 micrometers.
2. Internal Structure: Bacteria lack a true nucleus and other membrane-bound organelles found in eukaryotic cells. Their DNA is located in a region called the nucleoid, which is not enclosed by a membrane. Eukaryotic cells have a nucleus that houses their DNA, as well as other organelles like mitochondria, endoplasmic reticulum, Golgi apparatus, etc.
3. Cell Wall: Most bacteria have a rigid cell wall made of peptidoglycan, which provides structural support. Eukaryotic cells, like plants and fungi, also have cell walls, but they are composed of different materials (cellulose in plants, chitin in fungi). Animal cells do not have cell walls.
4. Ribosomes: Bacteria have smaller ribosomes (70S) compared to eukaryotic cells (80S). These ribosomes are crucial for protein synthesis.
5. Reproduction: Bacteria reproduce asexually through binary fission, where a single cell divides into two identical daughter cells. Eukaryotic cells, on the other hand, reproduce sexually or asexually, with more complex processes involving mitosis or meiosis.
6. Flagella: Bacteria that have flagella (structures for movement) have simpler flagella than those found in eukaryotic cells.
7. DNA Structure: Bacterial DNA is circular and usually exists as a single molecule. Eukaryotic DNA is linear and is organized into multiple chromosomes within the nucleus.
Let me know if you'd like me to elaborate on any of these differences!
