The Table shows information about two types of microscope.
Table
| Type of microscope | Maximum useful magnification | Resolution |
|---|---|---|
| light microscope | ×1500\times 1500×1500 | 200 nm200\ \text{nm}200 nm |
| electron microscope | ×2 000 000\times 2\,000\,000×2000000 | 0.2 nm0.2\ \text{nm}0.2 nm |
Ribosomes are about 25 nm25\ \text{nm}25 nm across.
Use the information in the Table to explain why ribosomes can be seen with an electron microscope but not with a light microscope.
Explain how the development of the electron microscope has increased our understanding of sub-cellular structures.
Give one reason why light microscopes are still used in schools.
41 exam-style questions on Edexcel GCSE Biology 1.1 Cells and cell structure, covering 1.1.1 Sub-cellular structures and functions, 1.1.2 Specialised cells and their adaptations, and 1.1.3 Microscope technology and cell structures. Each one has a worked solution and a mark scheme showing where the marks go.