CH 3 CELLS (FUNCTION) CYTOLOGYII (LECTURE NOTES)

CH 3 CELLS (FUNCTION) CYTOLOGYII (LECTURE NOTES) - CYTOLOGY...

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CYTOLOGY Biology 220 Cellular Physiology
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CELLULAR ACTIVITIES Transport systems – Processes of Transport Across Cell Membrane The Cell Cycle – Cellular Activities from Formation to Death or Division Protein Synthesis – using DNA & RNA to make proteins
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TRANSPORT SYSTEMS Passive Transport (does not require energy) Active transport (does require energy; ATP most common form)
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PASSIVE TRANSPORT SYSTEMS Diffusion Facilitated diffusion Filtration Osmosis
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DIFFUSION (Passive) Molecules in constant motion Molecules move from [high] to [low] Continues until Equilibrium
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Diffusion Across Membrane
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FACILITATED DIFFUSION Channel proteins or carrier proteins Allow diffusion of larger molecules & lipid insoluble molecules (e.g. Glucose)
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Filtration (Passive) Small molecules forced across membrane Depends on pressure e.g. kidney filtration
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OSMOSIS Diffusion of water across plasma membrane Water moves from [low solute] to [high solute]
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Tonicity Concentration of solutes in a solution
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CH 3 CELLS (FUNCTION) CYTOLOGYII (LECTURE NOTES) - CYTOLOGY...

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