Metabolism is - Metabolism is . , and it consists of two...

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Metabolism is . .. , and it consists of two main categories of reactions: the total chemical activity of an organism. This involves both the building of molecules (= increasing complexity, and requiring energy; anabolic reactions), or breaking down of molecules (= decreasing complexity, and releasing energy; catabolic reactions ) What is the main idea of the first law of thermodynamics, and how does this relate to the biological reactions we'll be studying ? The first law of thermodynamics means that cells cannot create or destroy energy, but they can transform it from one form to another. The laws of thermodynamics tell us that if a reaction in cell in which there is a big increase in S (a large ∆S), the reaction will have a negative ∆G, and be spontaneous. ATP What is the main idea of the second law of thermodynamics, and how does this relate to the biological reactions we'll be studying? The 2nd law explains that whenever cells transform energy from one form to another, some energy is always lost to
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This note was uploaded on 04/02/2008 for the course BIO 181 taught by Professor Jorstad during the Spring '07 term at University of Arizona- Tucson.

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Metabolism is - Metabolism is . , and it consists of two...

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