A laboratory technician needs to distinguish two structures in a cell sample. The structures are 8 nm apart. To measure the distance between them, their separation after magnification must be at least 4 mm.
| Microscope | Maximum magnification | Resolving power / nm |
|---|---|---|
| P | ×2000\times 2000×2000 | 200 |
| Q | ×400 000\times 400\,000×400000 | 1.0 |
| R | ×600 000\times 600\,000×600000 | 12 |
| S | ×1 000 000\times 1\,000\,000×1000000 | 0.2 |
Give the letter of the microscope that should be used. Explain your choice.
282 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.