AQA GCSE Biology · 8461
Specification 4.5.3.3 · Paper 2
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GCSE Biology · key term
A toxic nitrogen-containing substance formed when excess amino acids are deaminated in the liver.
Used by AQA
Specification 4.5.3.3 · Paper 2
For Higher Tier, keep the organs distinct: the liver deaminates excess amino acids and converts toxic ammonia to urea; the kidneys remove urea from the blood for excretion in urine.
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