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  • AQA
  • A Level Biology
  • Unit 2 - Cells
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Summary Ch 5 Cell recognition and the immune system notes A* AQA A Level Biology

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51 pages
2020/2021 Written for academic year
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AQA
Course
Unit 2 - Cells
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Preview 4 out of 51 pages

A set of thorough and concise notes created and used by an A* grade student to revise cell recognition and the immune system (ch 5 from the A Level AQA Biology course). The notes are detailed and clearly explain the topic by breaking each process down into steps. It includes clear and detailed diagrams and includes all content from ch 5 of the AQA A Level Biology specification and textbook.

Content preview

5.1 Defence
mechanisms

,Defence mechanisms
• A range of layers of defence against pathogens
• Some are general and immediate e.g. skin, or phagocytosis
• Some are specific and slower but longer lasting e.g. cell mediated
response (T lymphocytes) and humoral response (B lymphocytes)

,Recognising our own cells
• All cells have specific molecules on their surface which have specifi
structures
• Proteins (antigens) most important as they have highly specific
tertiary structures
• These allow immune system cells to identify…
• Pathogens
• Non-self e.g. transplant tissue
• Toxins
• Abnormal body cells e.g. cancer

,
Connected book
image
Glenn Toole, Susan Toole AQA Biology A Level Student Book
Publisher: januari 2015 ISBN: 9780198351764 Edition: 1

Document information

Study Level
A/AS Level
Subject
A Level Biology
Summarized whole book?
No
Which chapters are summarized?
Ch 5 cell recognition and the immune system
Uploaded on
May 28, 2022
Number of pages
51
Written in
2020/2021
Type
Summary
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Subjects

  • aqa
  • a level
  • paper 1
  • immune system
  • biology
  • phagocytosis
  • lymphocytes
  • vaccines
  • t cells
  • b cells
  • a

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