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  1. Enzyme - Wikipedia

    An enzyme is a protein that acts as a biological catalyst, accelerating chemical reactions without being consumed in the process. The molecules on which enzymes act are called substrates, …

  2. Enzyme | Definition, Mechanisms, & Nomenclature | Britannica

    Aug 19, 2025 · Enzyme, a catalyst that regulates the rate at which chemical reactions proceed in living organisms without itself being altered in the process. Most critically, enzymes catalyze all …

  3. Enzymes - Definition, Examples, Function - Science Notes and ...

    Mar 25, 2025 · Enzymes are specialized proteins (and in some cases RNA molecules) that act as catalysts in living organisms. They speed up the chemical reactions required for life by …

  4. Enzyme: Definition, Types, Structure, Functions, & Diagram

    Nov 11, 2021 · What Happens to an Enzyme after a Biochemical Reaction After the reaction, the products formed are released from the active site of the enzyme. The enzyme remains …

  5. Enzyme - National Human Genome Research Institute

    1 day ago · An enzyme is a biological catalyst and is almost always a protein.

  6. Enzymes: Structure, Types, Mechanism, Functions - Microbe Notes

    Nov 9, 2023 · An enzyme is a protein biomolecule that acts as a biocatalyst by regulating the rate of various metabolic reactions without itself being altered in the process.

  7. What are enzymes? - Science Sparks

    Sep 10, 2025 · Enzymes are biological catalysts. In simple terms, they speed up chemical reactions. Living organisms have chemical reactions happening in them all the time. One way …