# A student cuts their finger. The body responds to maintain a stable internal environment. Explain how the body responds to a change in blood glucose concentration after the student eats a sugary snack to recover from the shock.

> Pearson Edexcel A-Level Biology A (9BI0) — Topic 6 Response to Change · Explain · 5 marks

> After cutting their finger, a student feels faint and eats a sugary snack. Their blood glucose concentration rises above the normal level.

## Mark scheme (5 marks)

1. The rise in blood glucose is detected (by the pancreas)
2. The pancreas releases (more) insulin
3. Insulin causes the liver (and muscle cells) to convert glucose into glycogen
4. Blood glucose concentration falls back to the normal level
5. This process is an example of negative feedback, where a change is detected and a response is triggered to reverse/counteract that change

## Key terms

- [blood glucose concentration](https://www.gradenine.co.uk/glossary/blood-glucose-concentration)

## Related

- [Revision notes for Pearson Edexcel A-Level Biology A (9BI0)](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/a-student-cuts-their-finger-the-c9eff524) · Published by Druglandscape Ltd.