DP Biology (last assessment 2024)
Question 17N.2.SL.TZ0.f
| Date | November 2017 | Marks available | [Maximum mark: 1] | Reference code | 17N.2.SL.TZ0.f |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | State | Question number | f | Adapted from | N/A |
f.
[Maximum mark: 1]
17N.2.SL.TZ0.f
The graph shows the relationship between the diffusion capacity of the lungs for carbon monoxide (CO) and urine desmosines.
[Source: Reproduced with permission of the © ERS 2012. European Respiratory Journal Apr 2012, 39 (4) 839–845; DOI: 10.1183/09031936.00064611]
State the relationship between diffusion capacity and urine desmosines.
[1]
Markscheme
inversely correlated
OR
negative correlation
OR
the higher the «urine» desmosine concentration, the lower the diffusion «rate»
