Biology A-Level
pathogens
What pathogens means in Biology A-Level, as defined for AQA.
Definition of pathogens
Check what you remember
Read the wording for your board, then hide it and explain pathogens in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Organisms such as bacteria that carry foreign antigens.
Topics that use pathogens
- Cell recognition and the immune system (AQA A-Level)
Related terms
- active immunity
- agglutination
- animal use in production and testing
- antibody
- antigen
- antigen-antibody complex
- antigen-presenting cell
- antigens in vaccines
Using pathogens in the exam
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