Lecture 7 - Prokaryotic Cells: An Overview [INSERT FIGURE...

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Prokaryotic Cells: An Overview [INSERT FIGURE 3.2]
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Eukaryotic Cells: An Overview [INSERT FIGURE 3.3]
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Membranes All eukaryotic cells have cytoplasmic membrane Are a fluid mosaic of phospholipids and proteins Contain steroid lipids to help maintain fluidity Contain regions of lipids and proteins called membrane rafts Control movement into and out of cell Use diffusion, facilitated diffusion, osmosis, and active transport Perform endocytosis; phagocytosis if solid substance and pinocytosis if liquid substance Exocytosis enables substances to be exported from cell
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Cytoplasm of Eukaryotes Other Nonmembranous Organelles Ribosomes Larger than prokaryotic ribosomes (80S versus 70S) Composed of 60S and 40S subunits Cytoskeleton Extensive Functions Anchors organelles Cytoplasmic streaming and movement of organelles Movement during endocytosis and amoeboid action Produces basic shape of the cell Made up of tubulin microtubules, actin microfilaments, and intermediate filaments
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Lecture 7 - Prokaryotic Cells: An Overview [INSERT FIGURE...

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