Introduction to Enzymes and Allosteric Regulation

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Last updated 9:43 PM on 6/26/26
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12 Terms

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Enzyme

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

<p>A protein that acts as a biological catalyst to speed up chemical reactions.</p>
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Catalyst

A substance that speeds up a chemical reaction without being consumed.

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Substrate

The specific reactant molecule that an enzyme acts upon.

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Active Site

The specific region on an enzyme where the substrate binds.

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Activation Energy

The minimum amount of energy required to start a chemical reaction.

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Induced Fit Model

The theory that an enzyme changes shape slightly to tightly bind its substrate.

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Denaturation

The loss of an enzyme's shape and function due to extreme heat or pH.

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Competitive Inhibitor

A molecule that blocks the active site, competing directly with the substrate.

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Non-competitive Inhibitor

A molecule that binds elsewhere on the enzyme, changing the active site's shape.

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Allosteric Site

A binding site on an enzyme other than the active site.

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Allosteric Inhibitor

A molecule that binds to an allosteric site and deactivates the enzyme.

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Allosteric Activator

A molecule that binds to an allosteric site and activates the enzyme.