A-LevelBiologyCell structureOct/Nov 2020Paper 1 Q11 Mark
The size of the measles virus, Morbillivirus, is approximately 150 nm. The Mimivirus is approximately 4.5 times larger than Morbillivirus, whilst the Pandoravirus is approximately 1.5 times larger than the Mimivirus. Which viruses can be seen using a light microscope with a maximum resolution of 0.25 µm and using an electron microscope? key ✓ = can be seen X = cannot be seen [Figure 1.1]
AMorbillivirus: ✓, Mimivirus: ✓, Pandoravirus: ✓
BMorbillivirus: X, Mimivirus: ✓, Pandoravirus: ✓
CMorbillivirus: X, Mimivirus: X, Pandoravirus: X
DMorbillivirus: ✓, Mimivirus: X, Pandoravirus: X
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of cell structure within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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