Excretion in humans — Cambridge IGCSE Biology
Excretion of carbon dioxide, urea, water and ions; the urinary system, the nephron, and the liver's role in forming urea.
Revision notes
3 short notes, in the order of the specification.
- Excretion, the lungs and the urinary system
- The kidney and the nephronSupplement
- The liver, deamination and ureaSupplement
Exam questions
7 exam-style questions (21 marks), each with its mark scheme.
Answer the questionsFlashcards
13 cards: flip them, mark what you knew, and practise the rest.
Practise the cardsMind map
The whole of excretion in humans on one page, so you can see where this subtopic fits.
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