IB Biology SL C3.2.16 Vaccines and Immunization Questions
Practise interpreting antibody-response questions about vaccination, prior exposure and immunity in IB Biology SL C3.2.16.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
IB Biology SL C3.2.16 Vaccines and Immunization Questions question 1
The image shows a castor bean tick (Ixodes ricinus) which is commonly found in woodlands or forest areas. This tick can carry bacteria that cause Lyme disease in humans.
Question (a)
(a)
A vaccine has been developed to protect people against the symptoms of Lyme disease.
The graph shows the relative number of antibodies specific to these bacteria in the blood of a person before vaccination.
Question (i)
(i)
Suggest what can be concluded from the graph about the person before they were vaccinated.
Question (ii)
(ii)
Sketch a line on the graph to show how the number of antibodies would change over time after vaccination.
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