Biology 1002B Lecture Notes - Cytosol, Competitive Inhibition, Cytochrome
12 Jul 2013
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Energy and thermodynamics: living organisms require energy to do work, any change in state or motion of matter. 3: second law: in every energy conversion, some energy is converted to heat energy that is lost to the surroundings, and thus cannot be used for work. Every energy conversion increased the entropy of the universe. Energy converted to heat in the surroundings increases entropy (spreading of energy) no energy conversion is 100% efficient organisms must get a constant influx of energy because of energy is lost in conversions. Coupled: a + c b + d (overall exergonic) Actually: a + c i b + d typically, the exergonic reaction in the couple is atp + h2o adp + pi anabolic reactions are usually endergonic. One way that organisms manage their energy needs is to use atp as a ready energy source for many reactions.
