Contents
Key Stage 3
Meaning
Urea is a mixture of Nitrogen compounds formed when the body breaks down unwanted proteins.
Key Stage 4
Meaning
Urea is a mixture of Nitrogen compounds formed when the body breaks down unwanted proteins.
About Urea
- Urea is made in the liver. The liver breaks down proteins first producing ammonia which is then quickly turned into urea.
- Urea passes through the blood and is removed by the kidneys. This forms urine which is then stored in the bladder.
References
AQA
- Urea, page 165, GCSE Combined Science Trilogy; Biology, CGP, AQA
- Urea, page 216, GCSE Biology, CGP, AQA
- Urea, page 251, GCSE Chemistry; Student Book, Collins, AQA
- Urea, page 75, GCSE Biology; The Revision Guide, CGP, AQA
- Urea, pages 116, 198-9, GCSE Biology; Student Book, Collins, AQA
- Urea, pages 52, 141, 184-187, GCSE Biology; Third Edition, Oxford University Press, AQA