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9 Cards in this Set
- Front
- Back
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Energy of Activation (EA)
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The amount of energy that reactants must absorb before a chemical reaction will start.
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Enzyme
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A protein serving as a catalyst, a chemical agent that changes the rate of a reaction without being consumed by the reaction.
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Substrate
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The reactant on which an enzyme works
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Active Site
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The part of an enzyme molecule that actually bonds to the substrate
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Cofactors
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non proteins that are required to accompany enzymes for many enzymes to work, they can be inorganic substances
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Coenzyme
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If the cofactor is an organic molecule than it is called a coenzyme, most of them are made from vitamins or are vitamins themselves
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Competitive Inhibitor
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A substance that reduces the activity of an enzyme by entering the active site in place of the substrate whose structure it mimics.
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Noncompetitive Inhibitor
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A substance that reduces the activity of an enzyme by binding to a location remote from the active site, changing its conformation so that it no longer binds to the substrate.
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Negative Feedback
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When a metabolic reaction is blocked by its products, it is the most important mechanisms that regulate metabolism.
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