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Unformatted text preview: energy that could be used to do work • Chemical reactions occur with some change in free energy (delta G) Essential Concepts Essential Concepts • Spontaneous reactions have a negative delta G, release energy, increase disorder • Energetically unfavorable reactions ( nonspontaneous ) have a positive delta G, absorb energy, decrease disorder – they do not occur unless coupled with a spontaneous reaction • Coupling occurs via high energy carrier molecules – the major one is ATP • A phosphate is transferred from ATP to activate an intermediate, allowing the reaction to occur • ATP is used to create high energy (phosphorylated) forms of each subunit in the biosynthesis of macromolecules such as proteins and polysaccharides...
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This note was uploaded on 02/08/2012 for the course BIOL 302 taught by Professor Connollyandkrizek during the Spring '08 term at South Carolina.
- Spring '08