Unit 2-3 Enzymes

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Enzyme

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A protein that acts as a biological catalyst to speed up a chemical reaction.

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Product

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The substance(s) formed as a result of a chemical reaction.

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Induced Fit

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A model of enzyme activity that describes how an enzyme changes shape to accommodate the substrate.

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Substrate

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The reactant on which an enzyme works.

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Denature

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A process in which proteins lose their shape and function due to external stress or compound, such as heat or acid.

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Active Site

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The region on an enzyme where the substrate binds.

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Catalyst

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A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

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Inhibitor

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A substance that decreases the rate of, or prevents, a chemical reaction by interfering with the activity of an enzyme.

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Activation Energy

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The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.