| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.SL.tz0.8 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 8 | Adapted from | N/A |
Question
How does the heart meet the demand for oxygenated blood during physical activity?
A. Increasing cardiac output, decreasing stroke volume, increasing heart rate
B. Decreasing cardiac output, decreasing stroke volume, decreasing heart rate
C. Increasing cardiac output, increasing stroke volume, increasing heart rate
D. Decreasing cardiac output, increasing stroke volume, increasing heart rate
Markscheme
C
Examiners report
Mid-difficulty question. Answer A provided the greatest distraction.
