A technician examines four single cells in a sample of coastal mud.
| Record | Structures and genetic material observed |
|---|---|
| W | Cell wall, cell membrane, cytoplasm, ribosomes and a single loop of DNA |
| X | Cell membrane, cytoplasm, mitochondria and a nucleus |
| Y | Cell wall, chloroplasts, permanent vacuole and a nucleus |
| Z | Cell wall, cytoplasm and ribosomes, but no genetic material |
Which record could describe a bacterium?
Z
W
X
Y
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.