Thermodynamics and Enzymes

Thermodynamics and Enzymes - The Flow of Energy in Living...

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Unformatted text preview: The Flow of Energy in Living Things • Energy is defined as the ability to do work – It exists in two states: potential and kinetic Potential Energy = stored energy Kinetic Energy = energy of motion The Flow of Energy in Living Things • Energy exists in many forms – Mechanical, sound, light, electric, heat, etc. • All other forms can be converted into heat • Thermodynamics is the study of energy – Or heat changes The Flow of Energy in Living Things • Energy flows from the sun into the earth – Photosynthetic organisms capture part of it • They then use it to generate sugars • These sugars have potential energy due to the arrangement of their atoms into bonds • A chemical reaction is the making or breaking of chemical bonds The Laws of Thermodynamics • A set of universal laws governing all energy changes in the universe • The First Law – Energy cannot be created or destroyed • However, it can change forms – During each conversion, some energy is lost into the environment as heat energy • The energy of random molecular motion • The Second Law of Thermodynamics – Disorder in closed systems is continuously...
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This note was uploaded on 04/02/2008 for the course BIO 110 taught by Professor N/a during the Fall '08 term at Cal Poly Pomona.

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Thermodynamics and Enzymes - The Flow of Energy in Living...

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