Two sources of stem cells are being considered for a patient.
Table
| Source | Can form the required cell type | Tissue match | Requires destruction of an embryo |
|---|---|---|---|
| P | No | Close | No |
| Q | Yes | Poor | Yes |
Which conclusion is most appropriate?
Q could replace the cells, but rejection and ethical concerns remain.
P could replace the cells, because a close match causes differentiation.
P could replace the cells, because avoiding embryos guarantees success.
Q could replace the cells, so rejection and ethical concerns are removed.
46 exam-style questions on Edexcel GCSE Biology 2.2 Stem cells, covering 2.2.1 Function of stem cells and meristems and 2.2.2 Benefits and risks of stem cells. Each one has a worked solution and a mark scheme showing where the marks go.