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Parts of the Prokaryotic Cell

Parts of the Prokaryotic Cell. 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?

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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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