Tool 2: Technology (SL IB Biology)

The image below shows a piece of equipment that can be used to investigate breathing.  

State the name of the piece of equipment shown in the image.

[1]

Identify chemical T in the image.

[1]

Explain what happens to the chamber lid when a person breathes in and out.

Describe how spirometer data can be collected electronically.

The graph below shows a spirometer trace from a 25-year old test subject.

(i)

Calculate the tidal volume of the test subject.

[1]

Fibrosis of the lungs is a condition that reduces the volume of air that can be taken into the lungs with each normal breath.

Sketch a trace on the graph paper below to show normal breathing for an individual with fibrosis. Your trace should cover at least a 30 second time period.

Evaluate the benefit of mesocosm experiments in understanding interactions between organisms in their natural environment.