← Biology (4BI1)
Q1 / 5
Excretion
Foundation
1 mark
What happens to excess urea if the kidneys fail?
A
Urea accumulates in the blood (uraemia) — toxic; treated by dialysis or kidney transplant
B
Urea is safely stored in the liver
C
Excess urea is converted to glucose and used for energy
D
The lungs take over urea excretion
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