# Explain why urea must be removed from the body, and describe the path urea takes from the kidney to the outside of the body.

> Cambridge International IGCSE Biology (0610) — 13.1 Excretion in humans · Explain and Describe · 4 marks

## Mark scheme (4 marks)

1. Urea is toxic (to the body at higher concentrations) / a build-up of urea would cause harm to the organism
2. Urea (in urine) passes from the kidney into the ureter
3. Urine is stored in the bladder
4. Urine leaves the body through the urethra

## Key terms

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

## Related

- [Revision notes for Cambridge International IGCSE Biology (0610)](https://www.gradenine.co.uk/learn)
- [How to answer "Explain and Describe" 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-urea-must-be-removed-20039c0c) · Published by Druglandscape Ltd.