A-Level Biology OCR B H422

5.3.1: The principles and importance of homeostasis

#5.3.1a

#5.3.1b

#5.3.1c

#5.3.1d

#5.3.1e

#5.3.1f

5.2.3

The effect of ageing on the nervous system

5.3.2

The hormonal control of blood glucose and the management of diabetes

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