Learning objective

Hormones are chemical substances produced by glands and released into the bloodstream, which modify the activity of specific target cells.

Read the explanation, check the common trap, then practise with flashcards and questions.

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Exam focus

Read the explanation.
Check key terms.
Practise with linked questions.

Cambridge IGCSE PsychologySleep and dreams

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Understand this objective

Quick explanation

Hormones are chemical substances produced by glands and released into the bloodstream, which modify the activity of specific target cells

This point belongs to Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’,, especially Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’, outcomes.
You need to be able to hormones are chemical substances produced by glands and released into the bloodstream, which modify the activity of specific target cells.
The key ideas to know are Define, Describe, and Explain.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineDescribeExplain

Why it matters

This objective helps connect Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’, outcomes to exam-style questions, flashcards, and revision notes for Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’,.

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