Skip to content
    Biology A-Level

    Pathogen

    What Pathogen means in Biology A-Level, as defined for OCR.

    Definition of Pathogen

    Check what you remember

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

    Reference: OCR

    An organism or agent that causes disease and can be passed between hosts.
    OCR · Communicable diseases, disease prevention and the immune system (study guide)

    Topics that use Pathogen

    Related terms

    Using Pathogen 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