Biology A-Level
variable region
What variable region means in Biology A-Level, as defined for AQA.
Definition of variable region
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Reference: AQA
The tip of each arm, whose amino acid sequence and tertiary structure differ between antibodies and which forms a binding site complementary to one specific antigen.
Topics that use variable region
- 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 variable region in the exam
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