NROB60H3 Chapter Notes - Chapter 3: Cytosol, Sodium Channel, Phospholipid
1 Sep 2016
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Document Summary
The basics, some important terms boring but please learn know these: fluid composition. Ions are the main charge carriers involved in the conduction of electricity in biological systems. Important ions: monovalent cation sodium, monovalent cation potassium, the divalent cation calcium, the monovalent anion chlorine, phospholipid membrane. The phospholipid bilayer is not permeable to ions which is kind of important: at this point some clarifications. Electrical signals are generated through ion movement across the membrane. A change in ion permeability can occur by inserting a channel. The four major types of selective ion channels in the neuron are sodium, potassium, calcium, and chlorine. Three activation stimuli to open or close a channel are. We need to know about proteins, especially quaternary structures because they form the channels which are so important for our purposes. Primary structure is the sequence of amino acids in the polypeptide. Secondary structure is the coiling of a polypeptide into a conformation such as an alpha helix.
