Enzyme - Wikipedia
An enzyme (/ ˈ ɛ n z aɪ m /) is a protein that acts as a biological catalyst by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products.

Enzyme | Definition, Mechanisms, & Nomenclature | Britannica
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 aspects of cell metabolism. Learn more about enzymes in this article.

Enzymes: Function, definition, and examples - Medical News Today
Enzymes provide help with facilitating chemical reactions within each cell. Since they are not destroyed during the process, a cell can reuse each enzyme repeatedly. This article...

Enzymes – Definition, Examples, Function - Science Notes and Projects
Enzyme Definition. Enzymes are not just helpful—they are essential. Here’s the scientific definition: Enzyme (noun): A biological macromolecule, typically a protein (and occasionally an RNA molecule), that acts as a catalyst to accelerate a specific chemical reaction by lowering the reaction’s activation energy, without being permanently altered or consumed in the process.

Enzyme: Definition, Types, Structure, Functions, & Diagram - Science Facts
Enzymes are protein macromolecules that are necessary to initiate or speed up the rate of chemical reactions in the bodies of living organisms. The molecules on which enzymes act are called substrates, and the substance formed is called the product. They are found in all living cells that vary in type based on the function it performs.

Enzymes - Structure, Classification, and Function - BYJU'S
“Enzymes can be defined as biological polymers that catalyze biochemical reactions.” The majority of enzymes are proteins with catalytic capabilities crucial to perform different processes. Metabolic processes and other chemical reactions in the cell are carried out by a set of enzymes that are necessary to sustain life.

Enzymes: principles and biotechnological applications - PMC
Enzymes are biological catalysts (also known as biocatalysts) that speed up biochemical reactions in living organisms. They can also be extracted from cells and then used to catalyse a wide range of commercially important processes.

Enzymes: What Are Enzymes, Pancreas, Digestion & Liver Function
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems. Enzymes in our blood can also help healthcare providers check for injuries and diseases. What are enzymes?

Enzyme - National Human Genome Research Institute
An enzyme is a biological catalyst and is almost always a protein. It speeds up the rate of a specific chemical reaction in the cell. The enzyme is not destroyed during the reaction and is used over and over.

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