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CAIE A-Level Biology 14.1.3 Urea Production in the Liver

Practise explaining liver deamination of excess amino acids, conversion of toxic ammonia to urea and subsequent blood transport to kidneys for excretion.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • identify the liver as the site where excess amino acids undergo deamination
  • describe removal of the amino group from amino acids and formation of toxic ammonia
  • explain conversion of ammonia to urea before blood transport and kidney excretion

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