IB Biology SL B3.1.6 Lung Volume Measurements Questions

Explore how spirometry records breathing patterns and how exercise changes tidal volume, ventilation rate and total air inhaled in IB Biology SL B3.1.6.

Exam points

Define tidal volume and ventilation rate and identify spirometry as a way to measure breathing.
Calculate tidal volume, ventilation rate, minute ventilation and vital capacity from spirometer traces or data.
Relate exercise intensity to changes in tidal volume, ventilation rate and total air inhaled per minute.

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Study B3.1.6—Lung volume measurements conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[Maximum number: 2]

(a)

The graph shows the changes that take place in the volume of the lungs and pressure in the alveoli during one breath at rest.

[ 2 ]

(i)

State the tidal volume in litres.

[ 1 ]

(ii)

Calculate the ventilation rate.

[ 1 ]

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IB Biology SL B3.1.6 Lung Volume Measurements Questions question 1

Question (a)

Question (i)

Question (ii)