Skip to content
    Biology A-Level

    competitive inhibition

    What competitive inhibition means in Biology A-Level, as defined for AQA.

    Definition of competitive inhibition

    Check what you remember

    Read the wording for your board, then hide it and explain competitive inhibition in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    An inhibitor with a similar shape to the substrate binds to the active site, but its effect is reduced by increasing substrate concentration.
    AQA · Many proteins are enzymes (study guide)

    Topics that use competitive inhibition

    Related terms

    Using competitive inhibition in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Biology questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Biology A-Level terms