A scientist discovers a microscopic cell in water trapped inside an underground salt deposit.
The table shows two observations about the cell.
| Observation | Result |
|---|---|
| Diameter of cell | 3.0 μm3.0\ \mu\text{m}3.0 μm |
| Arrangement of the main DNA | A single loop free in the cytoplasm |
What type of cell is this?
Explain your answer using both observations.
Explain whether an electron microscope image of this cell would show mitochondria.
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.