A-LevelBiologyCell membranes and transportOct/Nov 2025Paper 1 Q201 Mark
The stalk of a dandelion flower is a hollow tube called a scape. Pieces of the scape are cut as shown by the dotted lines and placed in sucrose solutions of different water potentials. [Diagram showing a cross-section of a scape and a cut piece] Which diagram shows the piece that is placed in the sucrose solution with the highest water potential?
A[Diagram A showing outer cells and inner cells are turgid]
B[Diagram B showing outer cells are turgid and inner cells are flaccid]
C[Diagram C showing outer cells are flaccid and inner cells are turgid]
D[Diagram D showing outer cells and inner cells are flaccid]
✓ 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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