Infection & ResponseKey Facts

Key Facts About Adaptive Immunity

Part of Adaptive Immunity and AntibodiesGCSE Biology

This key facts covers Key Facts About Adaptive Immunity within Adaptive Immunity and Antibodies for GCSE Biology. Specific immune responses, antibody production, lymphocytes, memory cells It is section 9 of 15 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 9 of 15

Practice

20 questions

Recall

25 flashcards

Key Facts About Adaptive Immunity

  • Specific: Each immune response targets one specific antigen shape
  • Memory: Faster, stronger response upon re-exposure — the basis of vaccination
  • Two types of lymphocyte: B cells make antibodies; T cells coordinate the response and kill infected cells
  • Antibodies are proteins: Produced by plasma cells, shaped to fit one antigen
  • Antitoxins are antibodies: When the target is a toxin rather than a whole pathogen, antibodies are called antitoxins
  • Phagocytes still needed: Antibodies tag pathogens — phagocytes do the actual engulfing and destroying

Keep building this topic

Read this section alongside the surrounding pages in Adaptive Immunity and Antibodies. That gives you the full topic sequence instead of a single isolated revision point.

Practice Questions for Adaptive Immunity and Antibodies

What are antigens?

  • A. Antibodies produced by white blood cells
  • B. Unique proteins on the surface of pathogens
  • C. Toxins produced by bacteria
  • D. Memory cells that remain after infection
1 markfoundation

Explain how lymphocytes produce antibodies to destroy a specific pathogen.

3 marksstandard

Quick Recall Flashcards

What is an antigen?
A protein on the surface of a pathogen (or cell) that the immune system recognises as foreign. Antigens trigger the body to produce antibodies.
What is an antibody?
A protein produced by lymphocytes (white blood cells) that binds to a specific antigen. Each antibody has a unique shape that fits one antigen only — like a lock and key.

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