# Describe the roles of starch and glycogen as energy storage molecules in living organisms.

> Pearson Edexcel International GCSE Biology (4BI1) — 2.3 Biological molecules · Describe · 4 marks

## Mark scheme (4 marks)

1. Starch is an energy storage molecule found in plants
2. Starch is a large carbohydrate / made up of many glucose molecules
3. Glycogen is an energy storage molecule found in animals
4. Glycogen is a large carbohydrate made from many glucose molecules joined together

## Key terms

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

## Related

- [Revision notes for Pearson Edexcel International GCSE Biology (4BI1)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
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Source: [GradeNine](https://www.gradenine.co.uk/q/describe-the-roles-of-starch-and-a069f360) · Published by Druglandscape Ltd.