The length of a large central vacuole in a plant cell is approximately 0.09 mm0.09\text{ mm}0.09 mm. The thickness of the cell membrane of the same plant cell is approximately 0.000009 mm0.000009\text{ mm}0.000009 mm.
How many orders of magnitude are there between the length of the central vacuole and the thickness of the cell membrane?
40 exam-style questions on OCR GCSE Biology 1.1 Cell structures, covering 1.1.1 Viewing cells with light microscopes, 1.1.2 Sub-cellular structures and functions, and 1.1.3 Electron microscopy and resolution. Each one has a worked solution and a mark scheme showing where the marks go.