DP Biology (last assessment 2024)
Question 19M.3.HL.TZ2.10b
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.3.HL.TZ2.10b |
| Level | HL | Paper | 3 | Time zone | TZ2 |
| Command term | Outline | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
19M.3.HL.TZ2.10b
The diagram shows the formation of a biofilm in a mammary gland, producing a mastitis infection.
[Source: © International Baccalaureate Organization 2019]
(b)
Outline one example of an environmental problem caused by biofilms.
[2]
Markscheme
a. area where biofilm problem exists ✔ eg emptying introduces invasive bacterial species into coastal waters.
b. environmental concern ✔
Allow other verified examples
Examiners report
Most could outline an example of biofilms but they had more difficulty relating it with an environmental concern.
