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This analysis explores the characteristics of prokaryotic and eukaryotic cells, highlighting their similarities and differences. Prokaryotic cells, lacking a nucleus and membrane-bound organelles, feature a circular chromosome and fall into eubacteria and archaebacteria kingdoms. In contrast, eukaryotic cells possess a nucleus, membrane-bound organelles, and linear chromosomes, encompassing kingdoms such as Protista, Fungi, Plantae, and Animalia. Understanding these distinctions helps in determining cell types, consistent with the principles of Cell Theory, which states that all living things are composed of cells.
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Answer the following ?s in your ISN • What do you notice about the cells that we looked at yesterday?? Are there any similarities/differences? • How can we determine if a cell is a Prokaryote or a Eukaryote?
Cell Theory 1. All living things are composed of a cell or cells. 2. Cells are the basic (smallest) unit of life. 3. All cells come from preexisting cells.
2 major types of cells Prokaryotic cell • No nucleus • No membrane-bound organelles • Circular chromosome • Eubacteria Kingdom • Archeabacteria Kingdom Eukaryotic cell • Have nucleus • Membrane-bound organelles • Evolved - like u & me • Linear chromosomes • Protista Kingdom • Fungus Kingdom • Plant Kingdom • Animal Kingdom
Prokaryotic cells Diagram
Components • Cytoplasm • Ribosomes • Nuclear Zone • DNA • Plasmid • Cell Membrane • Mesosome • Cell Wall • Capsule (or slime layer) • Flagellum