Question 19M.1B.SL.TZ2.3b
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.1B.SL.TZ2.3b |
| Level | SL | Paper | 1B | Time zone | TZ2 |
| Command term | Compare and contrast | Question number | b | Adapted from | N/A |
Compare and contrast the effect of increasing exercise intensity at sea level and at an altitude of 4000 m.
[2]
a. in both sea level and 4000m ventilation rate while exercising «at all intensities» is «significantly» more than at rest
OR
both sea level and 4000m show an increase in ventilation rate «dm3 min–1» as exercise intensity increased ✔
b. ventilation rate at 4000m «slightly» higher than at sea level for all conditions
OR
higher ventilation rate at 4000m not «significantly» different as error bars overlap ✔
Accept positive correlation.
In this question the candidates were asked to look at data on the effect of exercise and altitude on ventilation rate. Most candidates could state one other variable that should have been controlled in this study and could compare and contrast the effect of increasing exercise intensity in the two groups.
