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AP Enzymes Flashcards

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8251736505Endergonicchemical reactions that result in a net release of energy0
8251739292Exergonicchemical reactions that absorb energy1
8251742558Activation energythe energy that a system needs before a process (reaction) can occur2
8251764177enzyme specificityeach enzyme only catalyzes one specific reaction3
8251769121substratesthese are the reactants which bind to enzymes in a reaction4
8251777043active sitethe site on an enzyme where substrates may attach5
8251780843induced fitthe change in shape of the active site of an enzyme so that it binds more snugly to the substrate. This change is caused by the entry of the substrate6
8251784025coenzymesAn organic molecule that is necessary in some enzymatic reactions7
8251788176cofactorAn inorganic molecule that is needed in some enzymatic reactions8
8251791697allosteric sitea region of the enzyme other than the active site to which a substrate can bind9
8251803389allosteric regulatorsaffect the activity of an enzyme by binding to a site other than the active site and thus changing the shape and function of the enzyme10
8251807882feedback inhibitiona method of control of a metabolic pathway in which an end product of the pathway acts as an inhibitor of an earlier enzyme within that same pathway11
8251814022Competitive inhibitionA substance reduces an enzyme's activity by entering the active site and blocking it from the substrate typically involved in the reaction12
8251816215Non-competitive inhibitionA substance binds to an allosteric site, causing the enzyme to change shape and making the active site no longer the correct shape for the substrate typically involved in the reaction13

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