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Evolutionary Significance of Cell Communication

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Published on Aug 7, 2011

036 - Evolutionary Significance of Cell Communication

Paul Andersen describes how cell communication is used in both single-celled and multicellular organisms. He starts by describing the symbiotic relationship between the bobtail squid and the bacteria Vibrio fisheri. He explains how bacteria use quorum sensing to communicate between each other and respond to changes in their environment. He also explains how multicellular organisms (like humans) can coordinate activities. He explains how epinephrine release from the adrenal gland can trigger a series of signal transduction pathways that can eventually lead to the release of glucose from the liver.

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All of the images are licensed under creative commons and public domain licensing:
DNA, n.d. http://openclipart.org/detail/58543/d....
"File:Bobtail Squid.jpg." Wikipedia, the Free Encyclopedia. Accessed December 8, 2013. http://en.wikipedia.org/wiki/File:Bob....
"File:Sepiola Atlantica.jpg." Wikipedia, the Free Encyclopedia, March 28, 2013. http://en.wikipedia.org/w/index.php?t....
Häggström, Mikael. English: Organ Available for Use in the Häggström Diagrams, November 23, 2008. Image:Complete GI tract - sized.png. http://commons.wikimedia.org/wiki/Fil....
Juancoronado1974. English: Phospholipid Bilayer, November 23, 2013. Own work. http://commons.wikimedia.org/wiki/Fil....
Vibrio Fischeri, n.d. http://microbewiki.kenyon.edu/index.p....

Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/people/Cosmi...
Creative Commons Atribution License

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