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Slide Show Notes4 (Blank) - Membrane Transport Chapter 11...

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Membrane Transport Chapter 11
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Passive Diffusion-Inefficient means of Transport across the Membrane
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Classes of Membrane Transport Proteins
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ATP-Powered Pumps
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Channel Proteins-Facilitated Diffusion
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Transporter (carrier) Proteins
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Uniport Transport -Transport small hydrophilic molecules -Glucose-transported by GLUT1 receptor in erythrocytes -Transport characterized by : 2. Transport not affected by degree of hydrophobicity 1. High rate of transport compared to diffusion
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3. Protein complexes facilitate transport -Diffusion occurs over entire surface of the membrane -Limited number of transporters -At high concentration gradients transport occurs at a maximum rate (velocity-V max ) Uniport Transport
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3. Transport occurs through molecules (protein complexes) in the cell membrane -Unlike diffusion that occurs throughout the entire surface of the membrane -Limited number of transporters -At high concentration gradients transport occurs at a maximum rate (velocity-V max ) 4. Uniports are specific for a single molecule (or closely
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Slide Show Notes4 (Blank) - Membrane Transport Chapter 11...

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