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Topics in Human Pathophysiology Fall 2009 Instructor: Theresa Martin (CSM) Gilead Drug Safety and Public Health
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Course website
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Levels of Body Organization Atoms Molecules Cells Tissues Organs Organ Systems Organism
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Figure 1.1
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Figure 3.1
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Cell Structure and Function Cells are the basic unit of life Cells are composed of chemicals Human cells have a membrane, cytoplasm, and nucleus
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Figure 3.14
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Water a polar molecule
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Properties of Water A great solvent A great reactant Good at holding temperature High heat of vaporization
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Figure 2.9
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Figure 3.14
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The Cell Membrane Composed of phospholipid bilayer with embedded proteins that serve a variety of functions Semipermeable Allows passive transport and also has active transport (pumps) Has important communication functions
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13 Figure 02.04 The Cell (Plasma) Membrane
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Diffusion
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Figure 3.8
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Figure 3.9a
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Figure 3.10 Bulk Transport
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Figure 21.2a
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Figure 3.11 19
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Cytoplasm Contains cytosol and organelles Organelles have specific functions Enzymes catalyze most reactions
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Figure 3.14
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Figure 2.23 Proteins in the cells have a variety of functions including structural proteins, and enzymes. Enzymes catalyze almost all cellular reactions “metabolism” Enzymes
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Figure 3.14
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Cell Nucleus Contains genetic material - DNA DNA has genes on it. DNA is a double strand with two chains of nucleotides linked up anti-parallel
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