A-LevelBiologyCell membranes and transportOct/Nov 2015Paper 1 Q171 Mark
What explains the effect on a red blood cell of being placed into pure water?
ALess water leaves the cell than enters it, so the cell shrinks.
BMore water enters the cell than leaves it, so the cell swells and bursts.
CWater enters the cell and none leaves it, so the cell swells and bursts.
DWater enters the cell and more leaves it, so the cell shrinks.
✓ Correct Answer
The correct answer is B. 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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