Question 2(b)
[Maximum number: 1]
The urinary system is used in excretion.
The diagram shows the urinary system with parts labelled A, B, C and D.
The urinary system produces urine.
Name a substance found in urine.
Edexcel IGCSE Biology 2.79B Kidney transplants
Practise recognising substances in urine and using urea data to calculate daily excretion from percentages or mean masses.
How this is tested
- name water, urea or ions as substances found in urine from urinary system context
- calculate mean mass of urea excreted per day from percentage and mass data