The body has a specific immune system that defends it against pathogens.
State what is meant by an antigen.
Name the type of white blood cell that produces antibodies.
Describe how antibodies help to protect the body against a pathogen.
Give the reason why an antibody can only attach to one type of antigen.
45 exam-style questions on Edexcel GCSE Biology 5.3 Immune system and medicines, covering 5.3.1 The specific immune system, 5.3.2 Response to immunisation, 5.3.3 Advantages and disadvantages of immunisation, 5.3.4 Antibiotics and bacterial infections, 5.3.5 Aseptic techniques in culturing, 5.3.6 Cross-sectional areas of cultures, 5.3.7 Stages of developing new medicines, and 5.3.8 Production of monoclonal antibodies. Each one has a worked solution and a mark scheme showing where the marks go.