• Question: How many types of hormones are there?

    Asked by Sixsixman to Amy, Craig, Laura, Partha, Saffron on 18 Jun 2015. This question was also asked by kaitlinnnn & aliceeee & b, imamidget, Ganty_27.
    • Photo: Saffron Whitehead

      Saffron Whitehead answered on 18 Jun 2015:

      There are three main types of hormones in terms of their chemistry.
      Peptides or proteins which an range from a mere 3 amino acids to around 200 amino acids. Secondly steroids which are all synthesised from cholesterol and finally catecholamines (e.g. adrenaline) thyroid hormones and melatonin which are made from a single amino i.e. tyrosine or melatonin.
      There a locally acting hormones such as prostaglandins which are made from fatty acids.

    • Photo: Laura Wales

      Laura Wales answered on 18 Jun 2015:

      Thanks Saffron 🙂

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