# Explain why the energy requirements of two people of the same age and body mass may be different.

> WJEC GCSE Biology (Wales) — 1.3.1 Diet and nutrition · Explain · 4 marks

## Mark scheme (4 marks)

1. Physical activity level affects energy requirements
2. Metabolic rate differs between individuals
3. Pregnancy / breastfeeding increases energy requirements (for females)
4. Occupation / job type affects energy use

## Key terms

- [energy requirements](https://www.gradenine.co.uk/glossary/energy-requirements)

## Related

- [Revision notes for WJEC GCSE Biology (Wales)](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-why-the-energy-requirements-of-098ddfbc) · Published by Druglandscape Ltd.