GCSE AQA Triple Biology Higher Tier Paper 2 • GCSE AQA Triple Biology Higher Tier Paper 2
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Homeostasis ANS:The regulation of the internal conditions of a cell or organism in response to internal or external changes. E.g. the control of: blood glucose concentration, body temperature, water and ion levels, etc. Negative Feedback ANS:This is a type of control mechanism: 1) a receptor detects a change in a stimulus. 2) the coordination centre compares the stimulus to a set point. 3) an effector then produces a response to correct any difference from the set point. The Thermoregulator...