A technician examines two cells and records the structures that can be seen in each.
| Cell | Structures seen |
|---|---|
| R | cell membrane, cytoplasm, cell wall, nucleus, permanent vacuole |
| S | cell membrane, cytoplasm, cell wall, DNA free in the cytoplasm |
Explain which cell is a bacterium. Predict whether this cell contains mitochondria and justify your prediction.
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.