U3 AOS 1: Overview of Enzymes

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Catalysts

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Substances that increase the rate of a chemical reaction without being consumed in the process.

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Substrate

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The substance on which an enzyme acts.

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Enzyme-substrate complex

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The intermediate formed when an enzyme binds to its substrate molecule(s).

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Product

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The molecules that result from the enzymatic reaction.

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Reusable

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Characteristic of enzymes that allows them to be used repeatedly in multiple reactions.

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Specific

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Enzymes are specific to their substrates due to the unique shape of their active site.

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Reversible

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Many enzyme-catalyzed reactions are reversible, allowing the reaction to proceed in both directions.

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Speed up

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Enzymes speed up chemical reactions by lowering the activation energy.

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Active site

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The region on an enzyme where the substrate binds.

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Proteins

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Enzymes are primarily composed of proteins.