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.

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Presentation transcript:

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? 4) What are the parts of a prokaryotic cell and what are their functions?

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?

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

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

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

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

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

Prokaryotic vs. Eukaryotic Organisms ProkaryoticEukaryotic Mostly unicellular (one cell) organisms Examples: bacteria Mostly multicellular (many cells) organisms Examples: animals, plants, fungi, protists

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