OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Skin and Temperature ControlHeating and cooling act as antagonistic effectors: one raises temperature and the other lowers it. Use the same water volume, starting temperature, thermometer position, room conditions, target temperature and recording period so that the two systems can be compared.