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5.3 Immune system and medicines

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Question 14

At a university, 75% of 3200 students receive a vaccine. The vaccine produces immunity in 88% of the students who receive it.

No student is initially immune and there are no infections during the vaccination programme.

How many students are expected to be immune after their immune responses have developed?

[1]
A

108810881088

B

211221122112

C

240024002400

D

281628162816

Markscheme

5.3 Immune system and medicines Questions

  1. GCSE
  2. /Biology
  3. /5.3 Immune system and medicines

87 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.

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