A-LevelBiologyCell membranes and transportFeb/Mar 2017Paper 1 Q191 Mark
The diagram shows two pathways, X and Y, through which molecules can diffuse across a cell surface membrane. Which row correctly shows possible pathways for lipids, water and glucose? [Figure 19.1]
AX only X and Y Y only
BX only Y only Y only
CX and Y X only X and Y
DX and Y X and Y X only
✓ 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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