| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.HL.TZ1.37 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 37 | Adapted from | N/A |
Question
The diagram below shows a longitudinal section through a kidney. What is the structure labelled Z and what is its function?
Markscheme
C
Examiners report
This question did not discriminate well with many able candidates choosing the incorrect response. Candidates knew that Z was the cortex and were split in their choice of A and C. Osmoregulation refers to the whole kidney and is more related to distal convoluted tubule in the medulla. Bowman‟s Capsules in the cortex carry out ultrafiltration. In retrospect, this was not a good question.
