PSIO 303A Lecture Notes - Lecture 16: Cell Signaling, Lipid Bilayer, Homeostasis
29 Sep 2016
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Block 2 - lecture 1 - intro to membrane transport in. Lecture objectives: list and discuss five physiological functions attributed to biological membranes, define (pediatric) failure to thrive. The typical cell that"s not so typical: membranes are critical in defining and maintaining the functional identities of the working units they comprise. The lipid bilayer prevents free diffusion of hydrophilic compounds between the compartments. Many macromolecules like proteins are kept in place by being inserted or attached onto membranes. Provide a way to organize many separate proteins into functional units, efficiency of metabolism increases thanks to this property. Maintenance of a cellular system requires the regulated exchange of materials between compartments. The membrane is the interface between a cell and its surrounding environment. When the environment changes, the cell has to respond to that change to maintain homeostasis. Some of the many proteins on the membrane are receptors that interact with.
