GS Enzymes

Front

What are enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.

Front

What happens to an enzyme when it is denatured?

Back

When an enzyme is denatured, its three-dimensional structure is altered, rendering it inactive.

Front

What is the active site of an enzyme?

Back

The active site is the specific region on an enzyme where substrate molecules bind and undergo a chemical reaction.

Front

What is a conformational change in an enzyme?

Back

A conformational change is a structural alteration in an enzyme that can affect its activity, often occurring when a substrate binds.

Front

What is an allosteric site?

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An allosteric site is a site on an enzyme other than the active site, where molecules can bind and influence enzyme activity.

Front

What is a competitive inhibitor?

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A competitive inhibitor is a substance that competes with the substrate for binding to the active site of an enzyme.

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What is a noncompetitive inhibitor?

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A noncompetitive inhibitor is a substance that binds to an enzyme at a site other than the active site, reducing its activity regardless of substrate concentration.

Front

What effect does cyanide have on enzymes?

Back

Cyanide binds to the active site of certain enzymes, preventing them from catalyzing reactions, particularly in ATP production.

Front

What are the products of the enzyme sucrase?

Back

The enzyme sucrase catalyzes the breakdown of sucrose into glucose and fructose.

Front

What happens to sucrose levels when sucrase is inhibited?

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If sucrase is inhibited, sucrose levels will rise because it cannot be broken down into glucose and fructose.