What is an enzyme? - MyTecNika

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What is an enzyme?

 Enzymes are proteins that act as biological catalysts. They decrease the amount of energy needed (activation energy) to start a metabolic reaction. Without enzymes, you would not be able to harvest energy and nutrients from your food. As an example, lactose intolerance is an inability to produce lactase, the enzyme that breaks down milk sugar (lactose). While this condition is not life-threatening for adults, it can have severe consequences for infants and children.