Eukaryotic Cells:
* Larger and more complex: Typically 10-100 micrometers in diameter.
* Have membrane-bound organelles: These are specialized compartments within the cell that carry out specific functions. Examples include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes.
* Nucleus: Contains the cell's genetic material (DNA) organized into chromosomes.
* Linear DNA: DNA is packaged with proteins into chromosomes.
* Multiple chromosomes: Usually have more than one chromosome.
* Ribosomes are larger: 80S ribosomes.
* Cytoplasm: Contains cytoskeleton for structural support and movement.
* Cell wall: Found in plants, fungi, and some protists, but not in animals.
* Reproduction: Usually reproduce sexually through meiosis and fertilization.
* Examples: Animals, plants, fungi, protists.
Prokaryotic Cells:
* Smaller and simpler: Typically 1-10 micrometers in diameter.
* Lack membrane-bound organelles: Instead, they have a few specialized regions within the cytoplasm.
* Nucleoid: A region in the cytoplasm where the DNA is located, but not enclosed by a membrane.
* Circular DNA: DNA is a single, circular molecule.
* Single chromosome: Typically only one chromosome.
* Ribosomes are smaller: 70S ribosomes.
* Cytoplasm: Lacking a cytoskeleton.
* Cell wall: Present in almost all prokaryotes, providing structural support.
* Reproduction: Typically reproduce asexually through binary fission.
* Examples: Bacteria and Archaea.
In summary:
Eukaryotic cells are more complex, with specialized organelles and a nucleus containing organized DNA. Prokaryotic cells are simpler, lacking these features and having their DNA in a nucleoid region. These fundamental differences reflect the evolutionary paths of these cell types.
