Waec Model Questions Vol1 2017 Biology Question 34
Practice objective / multiple choice question 34 from the 2017 Waec Model Questions Vol1 Biology examination.
During vigorous exercise the partial pressure of CO₂ in alveolar air rises from 40 mmHg to 45 mmHg while the partial pressure of O₂ falls from 100 mmHg to 90 mmHg. Using the diagram of the human respiratory system, (a) name the structure whose movement is primarily responsible for the increase in alveolar volume, and (b) if tidal volume increases from 500 mL to 750 mL while the respiratory rate remains 20 breaths min⁻¹, calculate the percentage increase in alveolar ventilation.
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This is Waec Model Questions Vol1 2017 Biology Question 34. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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