What best describes the role of enzymes?

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Multiple Choice

What best describes the role of enzymes?

Enzymes act as biological catalysts, meaning they speed up chemical reactions without being consumed in the process. They do this by binding to substrates at an active site to form an enzyme–substrate complex, which lowers the activation energy needed for the reaction to proceed. Because of this, reactions happen faster under the mild conditions inside living organisms. Enzymes are highly specific for their substrates and can be reused multiple times. They don’t get used up in a single reaction, and they don’t require high temperatures—most work best at the moderate temperatures and pH found in cells. So describing enzymes as catalysts that speed up chemical reactions captures their essential role.

Enzymes act as biological catalysts, meaning they speed up chemical reactions without being consumed in the process. They do this by binding to substrates at an active site to form an enzyme–substrate complex, which lowers the activation energy needed for the reaction to proceed. Because of this, reactions happen faster under the mild conditions inside living organisms. Enzymes are highly specific for their substrates and can be reused multiple times. They don’t get used up in a single reaction, and they don’t require high temperatures—most work best at the moderate temperatures and pH found in cells. So describing enzymes as catalysts that speed up chemical reactions captures their essential role.

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