BI 202 diffusion-Fox (Chapter 6)

BI 202 diffusion-Fox (Chapter 6) - Fig 6.1 COMPOSITION OF...

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Fig 6.1
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COMPOSITION OF EXTRACELLULAR AND INTRACELLULAR FLUIDS Extracellular Concentration mM Intracellular Concentration mM Na + K + Ca ++ Mg ++ Cl - HCO 3 - P i Amino Acids Glucose ATP Protein 145 4 1 1.5 110 24 2 2 5.6 0 0.2 15 150 1.5 12 10 10 40 8 1 4 4
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Mechanisms of Transport Across the Membrane Transport that requires the action of specific carrier proteins = Carrier Mediated Transport facilitated diffusion active transport Transport that is not carrier mediated diffusion ions lipid soluble molecules water (osmosis)
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Another Classification Scheme Passive Transport Movement down the concentration gradient Does not require metabolic energy diffusion osmosis facilitated diffusion Active Transport Requires use of metabolic energy (ATP) Requires specific carrier proteins
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Fig. 6.2 Three types of Passive Transport
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Diffusion Molecules in a gas or dissolved in a solution are in a constant state of random motion. Random motion tends to scatter the molecules evenly within a given volume Movement down the concentration gradient Net diffusion – higher to lower concentration
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Fig. 6.3
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Fig. 6.4
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Fig. 6.5
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Rate of Diffusion 1. Magnitude of concentration gradient 2. Permeability of the membrane
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Fig. 6.6
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Rate of Diffusion 1. Magnitude of concentration gradient 2. Permeability of the membrane 3. Temperature of the solution 4. Surface area of the membrane through which the
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This note was uploaded on 02/12/2012 for the course BI 202 taught by Professor Winn during the Fall '10 term at Northern Michigan University.

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BI 202 diffusion-Fox (Chapter 6) - Fig 6.1 COMPOSITION OF...

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