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Parts of the Prokaryotic Cell

Explore the main differences between prokaryotic and eukaryotic cells, their parts, functions, and where DNA is located. Learn about nucleus components and the types of organisms that have each cell type.

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Parts of the Prokaryotic Cell

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  1. Parts of the Prokaryotic Cell

  2. Check your Understanding 1) What is the main difference between a prokaryotic and eukaryotic cell? 2) What are the parts of a nucleus and where are they located? 3) What types of organisms have prokaryotic and eukaryotic cells? 4) What are the parts of a prokaryotic cell and what are their functions?

  3. Review • What is the main difference between a prokaryotic and eukaryotic cell? • What types of organisms have prokaryotic cells? • What types of organisms have eukaryotic cells?

  4. Main Difference? • Yeah, that’s right…the nucleus! Eukaryotic (“true kernel”) = true nucleus Prokaryotic (“before kernel”) = before nucleus orrrrr…. Pro = no

  5. Parts of the Nucleus • Nuclear envelope: 2 membranes surrounding the nucleus • Nuclear pores: holes in the envelope that allow substances in and out • Nucleoplasm: “cytoplasm of the nucleus”; this is where DNA is found • Nucleolus: small region inside the nucleus where ribosomes are made

  6. So if prokaryotes don’t have a nucleus, where is their DNA? • Prokaryotic DNA is found in a region of the cytoplasm called the “nucleoid region” • Not coiled into linear (X-shaped) chromosomes; unwound in a circular structure

  7. Parts of the Prokaryotic Cell • Cell Wall • Cell Membrane • Ribosomes • Cytoplasm • Nucleoid Region + DNA • Flagellum

  8. Cell Organelles that are NOT Found in Prokaryotes • Anything with a membrane around it! (AKA membrane-bound organelles) • Ex: ER, Golgi, vacuoles, mitochondria, chloroplasts

  9. Prokaryotic vs. Eukaryotic Organisms

  10. So What’s a “Protist”? • A unicellular (one-celled) eukaryote • Examples: Amoeba, Paramecium, Euglena ..\..\..\Downloaded Videos\Paramecium Feeding.avi ..\..\..\Downloaded Videos\Amoeba Feeds!.avi

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