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Topic 2 Responses to a changing environment

2.1 Define homeostasis as the maintenance of a stable internal environment

2.2 Demonstrate an understanding of the homeostatic mechanisms of:
a thermoregulation and the effect of temperature on enzymes
b osmoregulation
c blood glucose regulation
B1: Influences on life
2.3 Explain how thermoregulation…

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2.16 Investigate tropic responses

2.17 Analyse, interpret and evaluate data from plant hormone experiments, including
the action of auxins and gibberellins
Unit B1: Influences on life
2.18 Demonstrate an understanding of the uses of plant hormones, including:
a selective weedkillers
b rooting powder
c seedless fruit
d fruit ripening



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