Difference between revisions of "Urea"
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+ | :[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Urea, page 120, Gateway GCSE Biology, Oxford, OCR ''] |
Latest revision as of 11:03, 21 December 2019
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
Edexcel
- Urea, page 156, GCSE Biology, Pearson, Edexcel
- Urea, page 84, GCSE Biology; The Revision Guide, CGP, Edexcel
- Urea, pages 246, 248, GCSE Biology, CGP, Edexcel