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Chapter 6

Chapter 6. The Cell http://www.studiodaily.com/2006/07/cellular-visions-the-inner-life-of-a-cell/. Cells. 2 types of cells Prokaryotic Eukaryotic. Cells. How do we study them Light Microscope EM- TEM, SEM. Cells. Cells basic features Bounded by a plasma membrane Semifluid cytosol

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Chapter 6

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  1. Chapter 6 • The Cell • http://www.studiodaily.com/2006/07/cellular-visions-the-inner-life-of-a-cell/

  2. Cells • 2 types of cells • Prokaryotic • Eukaryotic

  3. Cells • How do we study them • Light Microscope • EM- TEM, SEM

  4. Cells • Cells basic features • Bounded by a plasma membrane • Semifluid cytosol • Chromosome(s) within a nucleus

  5. 1 Nuclear envelope is connected to rough ER, which is also continuous with smooth ER Nucleus Rough ER 2 Membranes and proteins produced by the ER flow in the form of transport vesicles to the Golgi Smooth ER cis Golgi Nuclear envelop 3 Golgi pinches off transport Vesicles and other vesicles that give rise to lysosomes and Vacuoles Plasma membrane trans Golgi 4 5 6 Lysosome available for fusion with another vesicle for digestion Transport vesicle carries proteins to plasma membrane for secretion Plasma membrane expands by fusion of vesicles; proteins are secreted from cell Endomembrane system: Endocytosis/Exocytosis Figure 6.16

  6. RER’s Forgotten Step Brothers SER and Golgi • Lipid Synthesis: Steroid Hormones, Phospholipids, • Calcium Storage • Golgi site of post-translational glycosylation

  7. The Cytoskeleton • Microtubules: Tubulin tracks • Centrosome: MTOC • Microfilaments: Actin • Intermediate filaments http://www.youtube.com/watch?v=9koqN9ViWjQ

  8. Extracellular Matrix • Glycoproteins: Collagen, Fibronectin • Proteoglycans • *Integrins

  9. Cell Junctions 3 Types • Tight Junctions, Desmosomes, Gap Junctions • Plamodesmata (plants, similar to gap junction)

  10. 5 µm Figure 6.32 The Cell: A Living Unit Greater Than the Sum of Its Parts • Cells rely on the integration of structures and organelles in order to function

  11. More Cool Movies

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