A-LevelBiologyGas exchangeFeb/Mar 2025Paper 1 Q291 Mark
The graph shows the dissociation curves for haemoglobin at two different partial pressures of carbon dioxide. Which labelled point on the oxygen dissociation curves will result in the highest concentration of haemoglobinic acid? [Figure 29.1]
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The correct answer is B. This question tests the candidate's understanding of gas exchange within the Biologysyllabus. The examiner's mark scheme requires...
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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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