Scientists remove all undifferentiated cells from a transplant. The remaining cells are healthy, functioning specialised cells from an unrelated donor.
Which statement best describes the remaining risk?
The cells must form a tumour because they have already differentiated.
The cells cannot be rejected because they have already differentiated.
The cells must carry a virus because they are from another person.
The cells may still be rejected because they are from another person.
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.