BIO 203 Lecture Notes - Lecture 8: Glut4, Syncytium, Diacylglycerol Kinase
13 Jan 2016
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Cells need to translate an external signal into an internal change. Cells can use electrical or chemical signals to relay messages, sometimes over long distances. Similar messages used in all forms of multicellular life. Transmission (through electrical synapse sort of like a cord that allows electrical signals to travel) You sense some delicious food on the far side of your petri dish. Endocytosis will have to change cytoskeleton/cell morphology around the food so it can it into the cell through endocytosis. Regulate ion balance (ex: food can be acidic) Cellular processes can change in response to both chemical and electrical signaling. The chemical that interacts with the receptor is called a ligand/1 st messenger. 1: if two different cells both have receptors that bind to a ligand, September 22, 2015 they can have two different responses (signals not determined by ligand! Instead by the receptor that the ligand binds to) Both endogenous and exogenous ligands can activate receptors.
