O-LevelBiologyTransport in Humans5090/21 · Oct/Nov 2022 · Q15 Marks
The diagram shows parts of the human body involved in excretion. [Figure A.B.C.D]
- (a)Name the liquid that passes out of the human body through tube D and the waste product it contains. liquid ........................................................................................................ waste product ............................................................................................[2]
- (b)Describe how parts A, B and C are involved in removing the waste product that passes out of tube D.[3]
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.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2022). The mark or mark type is shown in brackets.
- [1] urine;
- [1] urea;
- [1] renal artery / A + brings urea / waste product to B / kidney AW ;
- [1] kidney / B + filters blood to remove urea / waste products ;
- [1] bladder / C + stores / keeps / collects urine ;
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