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IB Biology SL 3.1.6 Lung Volume Measurements Question Bank

Practise IB Biology SL 3.1.6 using exact SL questions reading spirometer traces and calculating tidal volume, ventilation rate and vital capacity.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Read spirometer traces to calculate tidal volume, ventilation rate and vital capacity.
  • Define lung-volume measures and relate exercise intensity to tidal volume and breathing rate.
  • Use graph data to compare resting and exercising ventilation and explain the observed changes.

B3.1.6—Lung volume measurements question 1

[Maximum number: 2]

Question (a)

(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.

Figure for Question (a) — IB Biology SL
[ 2 ]

Question (i)

(i)

State the tidal volume in litres.

[ 1 ]

Question (ii)

(ii)

Calculate the ventilation rate.

[ 1 ]
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