Question
Define the terms homeostasis and negative feedback. (2 marks)
Mark scheme (2 marks):
- Homeostasis: maintenance of a constant/stable internal environment (despite external/internal changes) (1)
- Negative feedback: a control mechanism in which a change away from the set-point/norm triggers a response that reverses/opposes the change (returning the system to the set-point) (1)
2 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.