GCSEBiology: Combined ScienceWJECRevision NotesVariation, Homeostasis & Micro-organismsResponse & RegulationHormones as Chemical Messengers

Hormones as Chemical Messengers (WJEC GCSE Biology: Combined Science)

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Cara Head

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Cara Head

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Hormones

  • A hormone is a chemical substance produced by a gland and carried by the blood
  • The hormone alters the activity of one or more specific target organs i.e. they are chemicals which transmit information from one part of the organism to another and bring about a change
  • The glands that produce hormones in animals are known collectively as the endocrine system

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    Cara Head

    Author: Cara Head

    Expertise: Biology

    Cara graduated from the University of Exeter in 2005 with a degree in Biological Sciences. She has fifteen years of experience teaching the Sciences at KS3 to KS5, and Psychology at A-Level. Cara has taught in a range of secondary schools across the South West of England before joining the team at SME. Cara is passionate about Biology and creating resources that bring the subject alive and deepen students' understanding