C2.2.15 (HL)—Pain perception Topic Practice
C2.2.15 (HL)—Pain perception Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Students practise connecting TRP ion channels in free nerve endings to specific pain triggers including heat, acid, capsaicin, and tissue damage.
How this is tested
- predict how capsaicin exposure activates TRP channels to generate pain signals in sensory neurones
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