A-LevelBiologyCell structureFeb/Mar 2024Paper 1 Q31 Mark
Some stains can be used to identify cell structures in living cells. A dilute solution of one stain causes the whole cell to appear blue. The blue colour rapidly disappears from most cell structures. Those cell structures that release energy stay blue. Which type of cell structure is likely to stay blue?
Aendoplasmic reticulum
BGolgi body
Clysosome
Dmitochondrion
✓ Correct Answer
The correct answer is D: mitochondrion
📋 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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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