1. Eukaryotic and Prokaryotic Cells Prokaryote = without a nucleus Eukaryote = with a nucleus

2. Eukaryotic cells Diagram

3. Components Cytoplasm Nucleus Mitochondria Chloroplast Ribosomes RER SER Golgi body Vacuoles

5. Prokaryotic cells Diagram

6. Components Cytoplasm Ribosomes Nuclear Zone DNA Plasmid Cell Membrane Mesosome Cell Wall Capsule (or slime layer) Flagellum

7. Summary of differences Prokaryotic CellsEukaryotic cells small cells (< 5 mm)larger cells (> 10 mm) always unicellularoften multicellular no nucleus or any membrane-bound organelles always have nucleus and other membrane-bound organelles DNA is circular, without proteinsDNA is linear and associated with proteins to form chromatin ribosomes are small (70S)ribosomes are large (80S) no cytoskeletonalways has a cytoskeleton cell division is by binary fissioncell division is by mitosis or meiosis reproduction is always asexualreproduction is asexual or sexual