O-LevelBiologyTransport in Humans5090/11 · May/June 2025 · Q241 Mark
The processes of filtration and reabsorption take place in the kidneys. The daily amounts of some of the substances entering the kidneys in the blood and of these substances leaving the kidneys in the urine are shown. Which percentage of each substance is reabsorbed by the kidneys during a day?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A99, 100, 40
B148.5, 150, 20
C0.99, 1.0, 0.4
D1.0, 0.0, 60
✓ Correct answer
A: 99, 100, 40
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Transport in Humans and see which topics are most likely to come up next.
Sign up free →