| Date | May 2017 | Marks available | 1 | Reference code | 17M.1.SL.tz0.5 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | What | Question number | 5 | Adapted from | N/A |
Question
What factors may cause ventilation to increase during exercise?
A. Decreased oxygen levels and decreased blood acidity
B. Decreased carbon dioxide levels and increased blood acidity
C. Increased carbon dioxide levels and increased blood acidity
D. Increased oxygen levels and decreased blood acidity
Markscheme
C
Examiners report
Mid-range difficulty.
