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Summary presentation of the Immune system with notes attached £4.09   Add to cart
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  7. Unit 2 - Cells

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Summary presentation of the Immune system with notes attached
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Aspects of the immune system required for AQA a level biology is summarised with context to the specification in a powerpoint. Attached with that, there is a document with key terms and exam questions(with answers).

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  • December 7, 2021
  • 13
  • 2021/2022
  • Summary

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5_THE IMMUNE
SYSTEM
Jhenica Uthayakumaran

, 3.2.4
• Each typeCell recognition
of cell has specific molecules on its and the
surface that immune
identify it. These molecules include proteins an
enable the immune system to identify: pathogens, cells from other organisms of the same species, abnorm
system(spec.)
body cells, toxins.
• Definition of antigen. The effect of antigen variability on disease and disease prevention.
• Phagocytosis of pathogens. The subsequent destruction of ingested pathogens by lysozymes.
• The response of T lymphocytes to a foreign antigen (the cellular response).
• The role of antigen-presenting cells in the cellular response.

• The role of helper T cells (TH cells) in stimulating cytotoxic T cells (TC cells), B cells and phagocytes. The r
other T cells is not required.
• The response of B lymphocytes to a foreign antigen, clonal selection and the release of monoclonal antib
(the humoral response).
• Definition of antibody. Antibody structure.
• The formation of an antigen-antibody complex, leading to the destruction of the antigen, limited to
agglutination and phagocytosis of bacterial cells.
• The roles of plasma cells and of memory cells in producing primary and secondary immune responses.
• The use of vaccines to provide protection for individuals and populations against disease. The concept of
immunity.
• The differences between active and passive immunity.

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