A-LevelBiologyTransport in mammalsOct/Nov 2009Paper 1 Q281 Mark
The graph shows the percentage saturation of haemoglobin with oxygen at din pressures of oxygen. [Graph of % saturation of haemoglobin with oxygen vs partial pressure of oxygen] Which range of partial pressures of oxygen produces the greatest change of perce saturation of haemoglobin per unit oxygen tension?
A[Range A on graph]
B[Range B on graph]
C[Range C on graph]
D[Range D on graph]
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of transport in mammals 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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