3.3.15

Antibodies

Test yourself

Antibodies

Lymphocytes produce antibodies to defend against pathogens:

Illustrative background for AntigensIllustrative background for Antigens ?? "content

Antigens

  • Antigens are proteins found on the surface of cells.
  • Lymphocytes can recognise foreign antigens on the surface of pathogens and produce protein molecules called antibodies.
Illustrative background for Complementary shapeIllustrative background for Complementary shape ?? "content

Complementary shape

  • Antibodies have a complementary shape to the antigen and lock onto the pathogen, effectively ‘tagging’ them.
Illustrative background for Microorganisms clusterIllustrative background for Microorganisms cluster ?? "content

Microorganisms cluster

  • This causes the microorganisms to cluster, allowing other white blood cells to come and ingest (eat) them.

Jump to other topics

1The Nature & Variety of Living Organisms

2Structure & Functions in Living Organisms

3Organism Functions

3.1Respiration

3.2Gas Exchange

3.3Transport

3.4Excretion

3.5Coordination & Response

4Reproduction & Inheritance

5Ecology

6Biological Resources

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium