Lecture 2, Ch. 6

Lecture 2, Ch. 6 - Lecture #2 Date _ Chapter 6~ An...

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Lecture #2 Lecture #2 Date ______ Date ______ Chapter 6~ An Introduction to Metabolism
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Metabolism/Bioenergetics Metabolism/Bioenergetics Metabolism : The totality of an organism’s chemical processes; managing the material and energy resources of the cell Catabolic pathways : degradative process such as cellular respiration; releases energy Anabolic pathways : building process such as protein synthesis; photosynthesis; consumes energy
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Thermodynamics Thermodynamics Energy (E)~ capacity to do work; Kinetic energy~ energy of motion; Potential energy~ stored energy Thermodynamics~ study of E transformations 1st Law: conservation of energy; E transferred/transformed, not created/destroyed 2nd Law: transformations increase entropy (disorder, randomness) Combo: quantity of E is constant, quality is not
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Free energy Free energy Free energy : portion of system’s E that can perform work (at a constant T) Exergonic reaction: net release of free E to surroundings Endergonic reaction: absorbs free E from surroundings
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This note was uploaded on 10/31/2011 for the course BIO 102 taught by Professor Robinson during the Spring '09 term at UPenn.

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Lecture 2, Ch. 6 - Lecture #2 Date _ Chapter 6~ An...

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