Researchers are choosing a monoclonal antibody to deliver a toxic drug to cancer cells while minimising damage to healthy cells. The table shows which antigens are present.
Table
| Cell type | Antigen X | Antigen Y | Antigen Z |
|---|---|---|---|
| Cancer cells | present | present | absent |
| Healthy liver cells | present | absent | absent |
| Healthy kidney cells | absent | absent | present |
Which treatment is most suitable using these data?
a drug attached to an antibody specific to X
a drug attached to an antibody specific to Z
a drug attached to antibodies specific to X and Z
a drug attached to an antibody specific to Y
45 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.