BIOA01H3 Lecture 6: Lecture 6 Study Guide

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BIOA01H3 Full Course Notes
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BIOA01H3 Full Course Notes
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N the reactions that occur in cells are slow and need catalysts j substances that speed up a reaction without being permanently altered by that reaction. N enzymes j specialized group of proteins that catalyze reactions. N generally, reactions proceed only after the reactants receive enough energy to surpass the activation energy requirement. N enzymes are very specific (substrate-specific) and this specificity is determined by the 3d shape of the enzyme. N reactants are called substrates j they bind to the active site of the enzyme. N the binding of a substrate to the active site produces an enzyme-substrate complex held together by one or more means. N the enzyme lowers the activation energy required, offering the reactant an easier path to take. N no difference in free energy between catalyzed and uncatalyzed reactions. N enzymes orient substrates: bringing together atoms that will bond and bond only in that orientation, example: acetyl coa and oxaloacetate to form citrate.

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