OCR A Level Biology B (Advancing Biology)
OCR A Level Biology B (Advancing Biology) The Principles and Importance of Homeostasis Exam Questions
Free OCR A Level Biology B (Advancing Biology) exam questions on The Principles and Importance of Homeostasis, with mark schemes. Covers negative feedback, thermoregulation and the role of the hypothalamus.
The Principles and Importance of Homeostasis exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Biology Flashcards
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About OCR A Level Biology B (Advancing Biology) The Principles and Importance of Homeostasis
This topic covers the principles of homeostasis.
What you need to know
- Homeostasis Maintaining internal conditions.
- Feedback Negative and positive feedback loops.
- Thermoregulation Responses to heat and cold.
- Hypothalamus Detects changes and coordinates responses.
Common mistakes in The Principles and Importance of Homeostasis
- Saying vessels move.
- Mixing up positive and negative feedback.
- Forgetting receptors and effectors.
Try three The Principles and Importance of Homeostasis exam-style questions
1. Explain how sweating cools the body. (2 marks)
Show the mark scheme answer
Water evaporates from skin (1), taking heat energy with it (1).
2. State one response to cold. (1 mark)
Show the mark scheme answer
Shivering or vasoconstriction.
3. Define homeostasis. (1 mark)
Show the mark scheme answer
Maintaining a constant internal environment.
The Principles and Importance of Homeostasis FAQs
What does this topic cover?
Feedback and thermoregulation.
Why is homeostasis important?
Enzymes need stable temperature and pH.
What detects blood temperature?
The hypothalamus.
Revise this topic with flashcards: A Level Biology Flashcards, with mark scheme answers for Anki and Quizlet.
