What is the main function of stem cells in adult animals?
To replace dead cells and repair damaged tissues
To form every type of cell as the embryo develops
To carry oxygen around the body in the blood
To produce gametes for sexual reproduction
194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.