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3.2 Monoclonal antibodies (HT only)

3.2 Monoclonal antibodies (HT only)

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Question 11
H

The figure shows the inside of the strip from a home pregnancy test. The antibodies that can move along the strip are joined to blue beads. A second set of antibodies is fixed to the strip at the test line.

Figure: The inside of the strip from a home pregnancy test

image

a.

Explain why a blue line appears at the test line when HCG is present in the urine.

[3]
b.

Explain why no blue line appears at the test line when HCG is absent from the urine.

[2]
c.

The antibodies used in the test are monoclonal. Explain why this is important.

[2]
Markscheme

3.2 Monoclonal antibodies (HT only) Questions

  1. GCSE
  2. /Biology
  3. /3.2 Monoclonal antibodies (HT only)

42 exam-style questions on AQA GCSE Biology 3.2 Monoclonal antibodies (HT only), covering 3.2.1 Producing monoclonal antibodies and 3.2.2 Uses of monoclonal antibodies. Each one has a worked solution and a mark scheme showing where the marks go.

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