A student uses a light microscope (maximum resolution 200 nm200\text{ nm}200 nm, magnification ×1000\times 1000×1000) to observe a sample of eukaryotic cells containing mitochondria (width 0.5 μm0.5\ \mu\text{m}0.5 μm) and a sample of bacteria containing flagella (width 20 nm20\text{ nm}20 nm).
Which row in the table correctly identifies whether these structures can be resolved by this light microscope, and the correct calculated image size of the mitochondrion?
| Row | Can flagellum (20 nm20\text{ nm}20 nm) be resolved? | Can mitochondrion (0.5 μm0.5\ \mu\text{m}0.5 μm) be resolved? | Calculated image size of mitochondrion |
|---|---|---|---|
| A | Yes | Yes | 5.0 mm |
| B | No | No | 50 μm50\ \mu\text{m}50 μm |
| C | No | Yes | 50 mm |
| D | No | Yes | 0.5 mm |
Row A
Row B
Row C
Row D
22 exam-style questions on OCR A A Level Biology Cell structure. Each one has a worked solution and a mark scheme showing where the marks go.