Biology GCSE
Hormone
What Hormone means in Biology GCSE, as defined for Pearson Edexcel.
Definition of Hormone
A chemical messenger secreted by an endocrine gland directly into the bloodstream, which produces an effect on target organs.
Topics that use Hormone
- Topic 7 – Animal coordination, control and homeostasis (Pearson Edexcel GCSE)
Related terms
Using Hormone in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
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