# Explain how the organisation of cells into tissues and organs allows the human digestive system to break down and absorb food efficiently.

> Edexcel GCSE Biology (1BI0) — 1.2 Levels of organisation · Explain · 4 marks

## Mark scheme (4 marks)

1. A tissue is a group of cells with a similar structure and function working together
2. Different tissues are organised together to form an organ (e.g. the stomach or small intestine)
3. Each tissue within the organ carries out a specific role that contributes to digestion or absorption (e.g. muscular tissue churns food / epithelial tissue absorbs nutrients / glandular tissue secretes enzymes)
4. This division of labour / specialisation means each tissue/organ performs its function more efficiently than individual cells could alone

## Key terms

- [tissue](https://www.gradenine.co.uk/glossary/tissue)
- [organ](https://www.gradenine.co.uk/glossary/organ)

## Related

- [Revision notes for Edexcel GCSE Biology (1BI0)](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/explain-how-the-organisation-of-cells-1e059625) · Published by Druglandscape Ltd.