Key term for OCR GCSE Biology A, used in Homeostasis.
A measurable change in the internal or external environment.
Stimulus appears in OCR GCSE Biology A revision content for Organism level systems, especially Homeostasis and Importance of homeostasis.
Organism level systems
Homeostasis • Importance of homeostasis
Organism level systems
The endocrine system • Hormonal coordination
Organism level systems
The nervous system • Reflex arc
Organism level systems
The nervous system • Coordinated response
Organism level systems
The nervous system • Nervous system structure
Create a free account to access OCR GCSE Biology A revision notes, track progress, and practise related key terms.
