A-LevelBiologyGas exchangeOct/Nov 2010Paper 1 Q351 Mark
During an investigation on gas exchange, three measurements were made on four efficiency of gas exchange was the same in all four people. Which person, A, B, C or D, absorbed most oxygen during normal breathing? breathing rate /breaths per minute tidal volume /dm³ total lung volume /dm³
A14 0.6 6.4
B15 0.6 6.0
C16 0.5 6.4
D17 0.5 5.8
✓ Correct Answer
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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