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Unformatted text preview: Exergonic reactions are those in which free energy decreases when substrates are converted to products. They proceed spontaneously. Endergonic reactions Endergonic reactions are those in which free energy increases. They will proceed only if energy is added. LECTURE 1: METABOLISM Energy Coupling Delivers necessary energy for endergonic reactions, either through coupling or energy intermediates. Oxidation Reaction Type of Redox Reaction: loss of an electron (or addition of oxygen, since oxygen hogs electrons) or loss of an entire H atom (hydrogen donates an electron in polar bonds). Oxidation is an exergonic reaction Reduction Reaction Type of Redox Reaction: Involves an acquisition of an election. Is an endergonic reaction Redox Reaction Coupled Reduction and Oxidation Reactions They are common in cell metabolism and involve transfer of electrons from one atom or molecule to another Energy Intermediates LECTURE 1: METABOLISM...
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This note was uploaded on 04/17/2008 for the course BSC 2010 taught by Professor Pf during the Spring '08 term at FSU.
- Spring '08