Scientists can grow sheets of human epithelial tissue in a laboratory and use them to repair damaged skin. Scientists find it much harder to grow a whole human kidney in a laboratory.
The sheets are grown from cells that have not yet differentiated. Explain why these cells must differentiate before the sheet can be used to repair skin.
Suggest why growing a whole kidney is harder than growing a sheet of epithelial tissue.
A kidney is one organ in an organ system. Suggest why replacing a damaged kidney may not restore the function of the whole organ system.
19 exam-style questions on AQA GCSE Biology 2.1 Principles of organisation, covering 2.1 Principles of organisation. Each one has a worked solution and a mark scheme showing where the marks go.