Chapter 8 - Introduction to Metabolism Notes

Chapter 8 - Introduction to Metabolism Notes -...

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Chapter 8-Intro to Metabolism METABOLISM = all the  chemical  reactions  in an  organism CATABOLIC PATHWAY (CATABOLISM)-  • release of energy by the breakdown of complex molecules to simpler compounds     EX: digestive enzymes break down food ANABOLIC PATHWAY (ANABOLISM) • consumes energy to build complicated molecules from simpler ones    EX: linking amino acids to form proteins ORGANISMS TRANSFORM ENERGY ENERGY-  capacity  to do  work KINETIC ENERGY - energy  of moving  objects POTENTIAL ENERGY - energy  stored  as  a  result of position  or  structure CHEMICAL ENERGY - form  of potential  energy  stored  in chemical  bonds  in molecules THERMODYNAMICS-  study  of energy  transformations  that occur  in matter 1 st LAW OF THERMODYNAMICS = Cons ervation  of energy • energy of universe is constant; energy CAN BE transferred and transformed, but NEVER created or destroyed  2 nd LAW OF THERMODYNAMICS • every energy transfer or transformation increases the entropy (disorder or randomness) in universe      Equation that describes energy of system ; G= H-T S - change in free energy is represented by   G  S = ENTROPY G = FREE ENERGY of a system     (energy that is able to perform work when the temperature is uniform) H = Total energy in system    T = Absolute temperature in °Kelvin
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Chapter 8 - Introduction to Metabolism Notes -...

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