Question 1
FA person was infected with a pathogen on day 0. The person was infected with the same pathogen again on day 40.
The Figure shows the concentration of antibodies against this pathogen in the person's blood.
Figure
a.[1]
Give the maximum concentration of antibodies after the first infection.
b.[2]
Calculate how many times greater the maximum concentration of antibodies is after the second infection than after the first infection.
c.[2]
Use the Figure to describe two differences between the response to the first infection and the response to the second infection.
d.[3]
The person did not become ill after the second infection.
Explain why.
5.3 Immune system and medicines Questions
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.