Activation energy

Definition

The minimum energy needed to begin a chemical reaction.

Used by OCR

Specification B1.2g · Paper 1 (Foundation), Paper 3 (Higher)

Enzymes do not provide the reactants or become part of the final products. They help reactant particles react more easily by lowering the reaction's activation energy—the energy barrier that must be overcome before a reaction can begin.
Revise: Enzyme Mechanism and Metabolism

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GCSE Biology · key term

The minimum energy needed to begin a chemical reaction.

Used by OCR

Specification B1.2g · Paper 1 (Foundation), Paper 3 (Higher)

Enzymes do not provide the reactants or become part of the final products. They help reactant particles react more easily by lowering the reaction's activation energy—the energy barrier that must be overcome before a reaction can begin.
Revise: Enzyme Mechanism and Metabolism

Create a free account to read GCSE Biology revision notes for your exam board and track your progress.