Lecture 13 reactions and enzymes

Lecture 13 reactions and enzymes - L ecture 13 - REACTIONS...

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Lecture 13 - REACTIONS AND ENZYMES Autotrophs (producers)– can fix inorganic carbon Heterotrophs (consumers)- must eat producers to receive carbon Energy: gives the capacity to do useful work SIX USES OF ENERGY BY ORGANISMS 1. muscular work 2. heat 3. concentrating compounds 4. electrical work 5. synthesis, growth 6. bioluminescent work 1 st law of thermodynamics- conservation of energy 2 nd law of thermodynamics- entropy happens (the universe is becoming more disordered) Gibbs Free Energy (G, joules) G=H-TS H enthalpy, total energy of a system, a measure of the type and quantity of the chemical structure (joule) S entropy, a measure of the disorder of the system (joule/Kelvin) T temperature (Kelvin) - Systems with: o High free energy less stable greater work capacity spontaneously changes:
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Closed system - reactions proceed for while until the build-up of products. Then stable equilibrium is reached. Open system
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This note was uploaded on 02/15/2011 for the course BIOG 101 taught by Professor Tatwick during the Fall '09 term at Colorado Christian.

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Lecture 13 reactions and enzymes - L ecture 13 - REACTIONS...

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