Ch 11 Review

Ch 11 Review - Chapter 11: Redux Growth factors consist of...

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Chapter 11: Redux Growth factors consist of compounds that can stimulate nearby target cells to grow and divide o Numerous cells can simultaneously receive and respond to molecules of growth factor produced by a single cell in their vicinity Synaptic signaling - signal along a nerve cell triggers secretion of a chemical signal carried by neurotransmitter signal Hormones - used for long distance signaling, specialized cells release hormone molecules which travel via the circulatory system to target cells in other parts of the body Molecule must be recognized by a specific receptor and the signal must be transduced inside the cell before the cell can respond Sutherland: found that there were three stages of cell signaling through research of epinephrine, could activate glycogen phosphorylase only when the hormone was added to a solution of intact cells Reception : target cell’s detection of signaling molecule (molecule binds to receptor protein at surface or inside cell) Transduction : binding of molecule changes the protein and initiates conversion of signal, sequence of changes in different molecules Cell Response : receptor protein on or in target cell hears the signal and responds to it, signaling molecule behaves as a ligand, shape change directly activates the receptor
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This note was uploaded on 09/28/2010 for the course BISC 220 taught by Professor Mcclure during the Spring '09 term at USC.

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Ch 11 Review - Chapter 11: Redux Growth factors consist of...

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