CAIE IGCSE Biology 14.3.1 Defining a Hormone
Practise constructing the complete hormone definition from its source, transport route and effect on specific target organs.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- describe a hormone as a chemical substance produced by an endocrine gland
- state that hormones are carried in blood plasma from the gland around the body
- complete the definition by naming an altered activity in a specific target organ
14.3.1—Hormone as a chemical substance question 1
[Maximum number: 2]
The endocrine system in mammals produces hormones.
Define the term hormone.
(i)
chemical / substance, produced by a gland ; transported in the blood (plasma) ; alters the activity of one of more specific target, organs / tissues / cells ;
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