Chapter_07_Membrane_Structure_and_Function - Membrane...

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Vocabulary Amphipathic - Has both a hydrophilic region and a hydrophobic region. Integral Proteins Generally a transmembrane proteins; with hydrophobic regions that completely span the hydrophobic interior of the membrane. Peripheral Proteins - Are not embedded in the lipid bilayer at all; they are appendages loosely bound to the surface of the membrane, often to the exposed parts of integral proteins. Diffusion - The spontaneous tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area. Concentration Gradient- In the absence of other forces, a substance will diffuse from where it is more concentrated to where it is less concentrated. Passive Transport- Diffusion of a substance across a biological membrane. Hypertonic- Solution with a higher concentration of solutes. Hypotonic- Solution with a lower solute concentration. Isotonic-
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This note was uploaded on 04/01/2012 for the course BIO 141 taught by Professor Dr.cafferty during the Spring '11 term at Emory.

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