A home pregnancy test has a test window and a control window. A woman uses the test and a coloured line appears in the control window but not in the test window. What does this result show?
The test worked correctly and HCG was present in the urine sample
The test worked correctly and HCG was absent from the urine sample
The test did not work correctly and HCG was present in the sample
The test did not work correctly and HCG was absent from the sample
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.