DP Biology (last assessment 2024)

Test builder »

Question 18M.3.SL.TZ2.3b

Select a Test
Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.3.SL.TZ2.3b
Level SL Paper 3 Time zone TZ2
Command term Describe Question number b Adapted from N/A
b.
[Maximum mark: 2]
18M.3.SL.TZ2.3b

In an experiment to explore the effect of exercise on ventilation rate, a subject breathed into a data logging sensor that measured air flow.

The graphs show the result before the subject exercised and immediately after the exercise had finished.

(b)

Describe how the mean tidal volume after exercise could be determined using the graph.

[2]

Markscheme

a. measure a volume difference for an individual breath
OR
maximum − minimum for an individual breath 

b. repeat for several breaths and determine a mean 

Syllabus sections