Ch 5 Bio - Chapter 5 The Dynamic Cell Membrane Chap t er 5...

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Chapt er 5, page 1 Chapter 5 The Dynamic Cell Membrane
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Chapt er 5, page 2
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Chapt er 5, page 3
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Chapt er 5, page 4 Membrane Transport Processes I. Passive Processes
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Chapt er 5, page 5
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Chapt er 5, page 8 Chapt er 5 Highlights: I. Membrane Composition and Structure A. Lipids constitute the bulk of a membrane B. Membrane proteins are asymmetrically distributed C. Cell membranes often contain carbohydrates on exterior surface II. Cell Recognition and Adhesion A. Cell recognition and adhesion involve proteins, carbohydrates at the cell surface B. Specialized cell junctions complexes include tight junctions, desmosomes, gap junctions III. Passive Processes of Membrane Transport A. The physical nature of diffusion B. Simple diffusion takes place through the membrane bilayer C. Osmosis is the diffusion of water across membranes D. Diffusion may be aided by channel proteins E. Carrier proteins aid diffusion by binding substances IV. Active Transport A. Active transport requires energy input, and is directional across membrane B. Primary and secondary active transport rely on different energy sources V. Endocytosis and Exocytosis A. Macromolecules and particles enter the cell by endocytosis B. Receptor-mediated endocytosis is highly specific C. Exocytosis moves materials out of the cell VI. Membranes Are Not Simply Barriers A. Electrically excitable membranes B. Membranes compartmentalize biochemical events in cell VII. Membranes Are Dynamic A. Membranes retain individual identity B. Material is exchanged among membranes in cell
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Chapt er 5, page 9 Chapter 5 Key Words: Cell junctions Desmosome Gap junction Tight junction Coated vesicle Endocytosis Exocytosis Fluid mosaic model
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Ch 5 Bio - Chapter 5 The Dynamic Cell Membrane Chap t er 5...

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