# State the substances that are filtered out of the blood at the glomerulus, and explain what happens to these substances as they pass along the renal tubule.

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

## Mark scheme (4 marks)

1. Names substances filtered at the glomerulus
2. All glucose is reabsorbed back into the blood
3. Most water is reabsorbed back into the blood
4. Urea (and excess ions/water) remain in the tubule and form urine

## Key terms

- [glomerulus](https://www.gradenine.co.uk/glossary/glomerulus)
- [renal tubule](https://www.gradenine.co.uk/glossary/renal-tubule)

## Related

- [Revision notes for Cambridge International IGCSE Biology (0610)](https://www.gradenine.co.uk/learn)
- [How to answer "State and 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/state-the-substances-that-are-filtered-13f67249) · Published by Druglandscape Ltd.