012 - Life Requires Free Energy
Paul Andersen describes how free energy is used by organisms to grow, maintain order, and reproduce. A brief discussion of the first and second law of thermodynamics is also included. Disruptions in the amount of free energy can cause death and disruptions to popultaions, communities, and ecosystems.
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All of the images are licensed under creative commons and public domain licensing:
Bread, n.d. http://openclipart.org/detail/16974/bread-by-jean_victor_balin.
Farm, n.d. http://openclipart.org/detail/27083/farm-by-egore911.
Fast Food, Lunch-Dinner, Lasagna, n.d. http://openclipart.org/detail/9081/fast-food-lunch-dinner-lasagna-by-gerald_g.
"File:BlueMarble-2001-2002.jpg." Wikipedia, the Free Encyclopedia. Accessed November 11, 2013. http://en.wikipedia.org/wiki/File:BlueMarble-2001-2002.jpg.
"File:Diagram of Eye Evolution.svg." Wikipedia, the Free Encyclopedia. Accessed November 11, 2013. http://en.wikipedia.org/wiki/File:Diagram_of_eye_evolution.svg.
"File:Glycolysis2.svg." Wikipedia, the Free Encyclopedia. Accessed November 11, 2013. http://en.wikipedia.org/wiki/File:Glycolysis2.svg.
"File:Human Embryo - Approximately 8 Weeks Estimated Gestational Age.jpg." Wikipedia, the Free Encyclopedia. Accessed November 11, 2013. http://en.wikipedia.org/wiki/File:Human_Embryo_-_Approximately_8_weeks_estimated_gestational_age.jpg.
File:Kartoffeln Der Sorte Marabel.JPG, n.d. http://en.wiktionary.org/wiki/File:Kartoffeln_der_Sorte_Marabel.JPG.
"File:Leaf 1 Web.jpg." Wikipedia, the Free Encyclopedia, November 11, 2013. http://en.wikipedia.org/w/index.php?title=File:Leaf_1_web.jpg&oldid=573724699.
"File:Lobes of the Brain NL.svg." Wikipedia, the Free Encyclopedia. Accessed November 11, 2013. http://en.wikipedia.org/wiki/File:Lobes_of_the_brain_NL.svg.
File:Mouse.svg, n.d. http://commons.wikimedia.org/wiki/File:Mouse.svg.
"File:Rano Raraku Quarry.jpg." Wikipedia, the Free Encyclopedia. Accessed November 11, 2013. http://en.wikipedia.org/wiki/File:Rano_Raraku_quarry.jpg.
Intro Music Atribution
Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution License
Tagged under: free energy,life,thermodynamics,evolution,biology,ap biology,educational,tutorial,metabolism,energy pyramid
1. Where does the "free" energy that living things need come from? (00:02:58)
2. How much of the energy available to your body is used by the nervous system? (00:02:59)
3. All energy ends up being eventually converted to: (00:03:38)
4. Why can the second law of thermodynamics be true while life on Earth is actually becoming more organized? (00:06:20)
5. Life requires free energy for a number of purposes. What is one of them? (00:08:35)
6. Why were the people of Easter Island "only holding on by a thread" after cutting down all the trees? (00:12:32)
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