Learning objective
Link stimulus detection to responses that increase survival.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Topic
Response and homeostasis official content
Subtopic
Stimuli, both internal and external, are detected and lead to a response
Study support
Understand this objective
Quick explanation
Link stimulus detection to responses that increase survival
- This point belongs to Response and homeostasis official content, especially Stimuli, both internal and external, are detected and lead to a response.
- You need to be able to link stimulus detection to responses that increase survival.
- The key ideas to know are stimulus, response, and survival.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Stimuli, both internal and external, are detected and lead to a response to exam-style questions, flashcards, and revision notes for Response and homeostasis official content.
Quick student answer
Which of the following best describes the role of receptors in the response to stimuli?
Direct answer
Receptors detect changes in the internal or external environment and send signals to effectors to elicit a response.
Key terms
- Receptor: A protein or cell that detects specific stimuli and initiates a response in an organism.
- Effector: An organ or cell that acts in response to a stimulus, such as muscles or glands.
Common trap
Confusing receptors and effectors: Receptors detect stimuli and send signals, while effectors carry out the response.
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Revision tools
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Explain why organisms detect internal and external stimuli.
Stimuli, both internal and external, are detected and lead to a response
- Distinguish internal and external environmental changes.
Stimuli, both internal and external, are detected and lead to a response
- Relate coordination systems to organism responses.
Stimuli, both internal and external, are detected and lead to a response
- Explain how receptors convert stimuli into nervous impulses.
Nervous coordination
- Describe Pacinian corpuscle and retinal photoreceptor function.
Nervous coordination