Date | May 2015 | Marks available | 1 | Reference code | 15M.1.HL.TZ2.34 |
Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
Command term | Outline | Question number | 34 | Adapted from | N/A |
Question
What happens when human body temperature rises during exercise?
A. The arterioles move closer to the skin.
B. The hypothalamus decreases cell respiration.
C. The skin capillaries close up.
D. The water from sweat evaporates to cool the body.
Markscheme
D
Examiners report
Many candidates wrongly believed that arterioles move in the body instead of suffering vasodilation. Nevertheless, most candidates had the right answer, proving this question to be too easy.
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