A-LevelBiologyCell structure9700/12 · Oct/Nov 2016 · Q11 Mark
Until recently, the typical viruses known to science were 20 – 150 nm in size. In 2003, the Mimivirus was discovered with a size of approximately 680 nm. In 2013, the Pandoravirus was discovered which has a size of over 1000 nm. Which viruses can be seen using both a light microscope with a maximum resolution of 0.25 μm and an electron microscope? key ✓ = can be seen, x = cannot be seen
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Atypical virus ✓, Mimivirus ✓, Pandoravirus ✓
Btypical virus X, Mimivirus ✓, Pandoravirus ✓
Ctypical virus X, Mimivirus X, Pandoravirus ✓
Dtypical virus X, Mimivirus X, Pandoravirus X
✓ Correct answer
B: typical virus X, Mimivirus ✓, Pandoravirus ✓
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