BIOL 112 Lecture Notes - Lecture 7: Conformational Change, Osmotic Concentration, Resting Potential

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BIOL 112 Full Course Notes
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BIOL 112 Full Course Notes
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Allow proteins inserted into membrane (integral/transmembrane) to interact with each other. Fluid mosaic model membrane proteins integrated by one/multiple helices because side chains pointing out and all amino acids are hydrophobic. H bonds inside stabilize helix along the cylinder. Freeze fracture splits membranes into 2 lipid leaflets easily bc freezing tightly binds phospholipids to surrounding water molecule leaflets have a stronger bond to water (h bonds) than it does to eachother (vw forces) The passive mixing of substance resulting in transport along a [] gradient. Due to brownian motion random walk of individual molecules due to thermal motions and collisions. Diffusion of water across a selectively permeable membrane. Moves from regions of low solute [] to high solute [] Ions and large polar molecules need help from transport proteins. Closed in their default stage and open upon changes in electricity or binding or regulators.

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