IB skill practice

Explain homeostasis and feedback control

Paper 1, Paper 2 5 marks Difficulty 3

Explain blood glucose control

A glucose-control model in a neurobiology tutorial shows blood glucose rising after a meal and insulin causing cells to take up glucose. Explain the role of insulin. Enter the answer and choose the interpretation that best matches the biological evidence.

Worked practice: biological evidence and answer

Use the labelled biological evidence first, then connect it to the final answer.