A patient receives stem cells that are a good tissue match. A tumour develops at the transplant site.
Which explanation best accounts for this outcome?
The cells are rejected because matching prevents cell differentiation.
The cells are rejected because matching causes uncontrolled division.
The cells avoid rejection but stop undergoing any cell division.
The cells avoid rejection but undergo uncontrolled cell division.
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.