A-LevelBiologyCell membranes and transportFeb/Mar 2024Paper 1 Q181 Mark
The diagram shows how an artificial partially permeable membrane was used to separate a 5% sodium chloride solution and a 10% sodium chloride solution in a beaker. The two sides of the beaker were labelled R and S. [Figure 18.1] Which row correctly describes and explains what will happen in the half of the beaker labelled S?
Adescription of S: volume of solution increases, explanation: net movement of water from a higher water potential to a lower water potential
Bdescription of S: volume of solution increases, explanation: net movement of water from a lower water potential to a higher water potential
Cdescription of S: volume of solution decreases, explanation: net movement of water from a higher water potential to a lower water potential
Ddescription of S: volume of solution decreases, explanation: net movement of water from a lower water potential to a higher water potential
✓ Correct Answer
The correct answer is A. 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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