A-LevelBiologyCell membranes and transportOct/Nov 2025Paper 1 Q191 Mark
In an experiment, four different-sized cubes of colourless agar were placed into a blue dye. The time taken for each cube to turn blue was recorded. Which row shows the surface area and volume of the cube that took the longest time to turn completely blue?
Asurface area /cm²: 6.0, volume /cm³: 1
Bsurface area /cm²: 9.5, volume /cm³: 2
Csurface area /cm²: 12.5, volume /cm³: 3
Dsurface area /cm²: 38.0, volume /cm³: 16
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of cell membranes and transport 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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