Biology A-Level
activation energy
What activation energy means in Biology A-Level, as defined for AQA.
Definition of activation energy
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Reference: AQA
The initial energy input needed to break bonds and reach the transition state, which each enzyme lowers for the reaction it catalyses.
Topics that use activation energy
- Many proteins are enzymes (AQA A-Level)
Related terms
- active site
- competitive inhibition
- conformational change
- denaturation
- enzyme specificity
- enzyme-substrate complex
- induced fit
- intracellular and extracellular enzymes
Using activation energy in the exam
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