CAIE A Level Biology 9700 · Homeostasis

Homeostasis: outline question

Outline4 marksStandard

The table below shows the blood glucose concentration of a healthy mammal at intervals after a meal.

Time after meal (min)	Blood glucose concentration (mmol dm $^{-3}$ )
0	4.5
30	6.2
60	5.8
90	5.0
120	4.5

Outline the principles of homeostasis in mammals, using the changes in blood glucose concentration shown in the table as an example.

How this question is marked

4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.

Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.

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