BIOL-1100 Lecture Notes - Lecture 16: Liposome, Hydrophile, Hydrophobe
29 Jun 2016
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Document Summary
Membranes protect the interior of the cell, separate the cell from its environment, retain metabolites and ions within the cell, sense external signals and respond. *as the membrane constantly changes, so does the function. Composed of two layers, on the outsides of the layers are the hydrophilic heads and on the inside are the hydrophobic tails. The heads and tails allow it to assemble into the membrane. (if too thin it will fold on itself and form liposome) They easily fuse with other membranes, which make it good for delivering small molecules (like dna: membrane. The fluid mosaic model describes the asymmetric surface of a membrane when looking at it from the top. 3 types of proteins that are classified by their associations with the membrane: Integral proteins: span the membrane, very tight interactions with the membrane; are asymmetric like the membrane.
