IB Biology HL D3.3.5 Thermoregulation
IB Biology HL D3.3.5 Thermoregulation

IB Biology syllabusFirst assessment 2025
Practise thermoregulation questions on body temperature control, sweating, shivering, vasodilation, thyroxin and data-based estimates.
How this is tested
- explain how sweating, shivering and skin blood flow respond to temperature change
- interpret temperature data and calculate differences with correct units
- link hypothalamus control and negative feedback to stable core body temperature
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