What is a hormone?

A hormone is a chemical messenger. It is produced by a gland and then travels in the blood to a specific target organ where it causes a response, changing the way the body functions. Hormones can be protein based (such as adrenaline) or steroid based (such as testosterone).

Answered by Emily A. Biology tutor

7922 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

menstrual cycle and contraceptive pills


Describe the sodium-potassium ion pump on cell plasma membranes (2 marks)


How do different factors affect the rate of photosynthesis and transpiration in plants?


What is osmosis?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences