DP Biology (first assessment 2025)

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Question 22M.1A.SL.TZ2.27

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.27
Level SL Paper 1A Time zone TZ2
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
22M.1A.SL.TZ2.27

Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli during ventilation. Alveolar pressure correlates to thoracic pressure. The diagram shows pressure changes in lung alveoli during ventilation in relation to normal atmospheric pressure. What causes forced movement of air out of the lungs at T?

 

 

 

 

 

 

 

 

 

 

[1]

Markscheme

B

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