| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.HL.TZ2.39 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Identify | Question number | 39 | Adapted from | N/A |
Question
Which of the following best describes what happens in the glomerulus?
A. Selective reabsorption of water and molecules by active transport
B. Ultrafiltration introduces water and other molecules into the capillaries
C. Regulation of salt balance leading to the production of urine
D. High blood pressure forces water and other molecules into the tubule lumen
Markscheme
D
Examiners report
Was another relatively difficult question that discriminated well. The term tubule lumen was unfamiliar to candidates and is an unusual way to refer to the space inside the Bowman‟s capsule, but even so, the more able candidates were able to reject answers A, B and C and choose D correctly.
