01:119:115 Lecture Notes - Lecture 7: Cellular Respiration, Thermodynamics, Living Systems

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* release energy: catabolic pathway- breaking down complex molecules to simpler ones, anabolic pathway- build complex molecule from simpler ones, cellular metabolism and energy change. * metabolism is a way to explain all chemical reactions the occur within your body. * metabolism=sum of all chemical reactions of an organism- maintains homeostasis. * if completely not balanced, you will be dead. * metabolism is an emergent property of life. * a metabolism pathway begins with a specific molecule and ends with a product. * almost every time you cause a reaction to occur, an enzyme is involved. * each step is catalyzed by a specific enzyme. * every biological reaction happens with a very specific enzyme. * energy= capacity to cause change; capacity to do work. * biological order & disorder: metabolism basics, free-energy change in chemical reactions (look at picture for notes) You can lose energy in the form of heat.

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