# Starch and glycogen are both carbohydrates made from many glucose molecules joined together. Describe the roles of starch and glycogen in living organisms, and name ONE other carbohydrate made from glucose, stating its role.

> Cambridge International IGCSE Biology (0610) — 4.1 Biological molecules · Describe · 4 marks

## Mark scheme (4 marks)

1. Starch serves as an energy store in plants
2. Glycogen serves as an energy store in animals
3. Cellulose named as the other carbohydrate made from glucose
4. Cellulose is used for structure / is the main component of the plant cell wall

## Key terms

- [starch](https://www.gradenine.co.uk/glossary/starch)
- [glycogen](https://www.gradenine.co.uk/glossary/glycogen)
- [carbohydrate](https://www.gradenine.co.uk/glossary/carbohydrate)
- [glucose](https://www.gradenine.co.uk/glossary/glucose)

## Related

- [Revision notes for Cambridge International IGCSE Biology (0610)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

---
Source: [GradeNine](https://www.gradenine.co.uk/q/starch-and-glycogen-are-both-carbohydrates-966cfaa1) · Published by Druglandscape Ltd.