Edexcel A-Level Biology A2 7.15 Core Practical 17 Exercise and Spirometer Traces Questions

Calculate respiratory minute ventilation from tidal volume and breathing frequency, converting volumes and time consistently and reporting the required units.

Exam points

calculate alveolar or minute ventilation from tidal volume and breathing rate

[Maximum number: 2]

The diagram shows a spirometer that can be used to investigate human lung function.

Figure for Question Edexcel A-Level Biology A2 7.15 Core Practical 17 Exercise and Spirometer Traces Questions question 1 — Edexcel A-Level Biology A2

A student used a spirometer to investigate the consumption of oxygen of a group of volunteers.

The graph shows a spirometer trace from one volunteer breathing at rest.

The line PQ indicates the oxygen consumption. Volume of air / dm ^3 Calculate the rate of oxygen consumption between P and Q. Give your answer with appropriate units.

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Edexcel A-Level Biology A2 7.15 Core Practical 17 Exercise and Spirometer Traces Questions question 1