Key term for OCR GCSE Biology B, used in Hormonal Control.
A signalling molecule, such as a hormone, that transmits information and instructions between different parts of the body.
Chemical messenger appears in OCR GCSE Biology B revision content for Human Physiology, especially Hormonal Control and Hormonal Coordination.
Create a free account to access OCR GCSE Biology B revision notes, track progress, and practise related key terms.
