Biology 9700 · AS & A Level · Antibodies and vaccination
Antibodies and vaccination — practice question
Fig. 4.1 shows an incomplete flow chart of several events in the primary immune response that take place after a person receives a vaccine.
(a)[3]
Choose the correct term from the list below to finish Fig. 4.1.
lymphocytes
antigens
mitosis
vaccine
T$_h$-lymphocytes
plasma cells
macrophages
(b)[3]
Explain why the person is unlikely to fall ill if the same pathogen infects them again several months later.
(c)[2]
Some parents choose not to let their children take part in a vaccination schedule.
Suggest how a country-wide vaccination schedule can give protection against infection to unvaccinated children.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The correct order is vaccine then macrophages then lymphocytes, followed by plasma cells and $T_h$-lymphocytes.” …