A-LevelBiologyCell structureMay/June 2020Paper 1 Q51 Mark
The features of some cells and cell structures that make ATP are listed. 1 has outer boundary membrane and folded inner membrane 2 has peptidoglycan cell wall outside an outer boundary membrane 3 has a double boundary membrane and stacks of inner membranes Which row identifies these components? [Figure 5.1]
A1: bacterium, 2: chloroplast, 3: mitochondrion
B1: chloroplast, 2: bacterium, 3: mitochondrion
C1: chloroplast, 2: mitochondrion, 3: bacterium
D1: mitochondrion, 2: bacterium, 3: chloroplast
✓ Correct Answer
The correct answer is D: 1: mitochondrion, 2: bacterium, 3: chloroplast
📋 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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