DP Biology (last assessment 2024)
Question 19M.3.HL.TZ2.a
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.HL.TZ2.a |
| Level | HL | Paper | 3 | Time zone | TZ2 |
| Command term | State | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
19M.3.HL.TZ2.a
Most stomach ulcers are caused by a bacterium that lives under the mucus lining of the stomach wall.
State the name of the bacterium that can cause stomach ulcers.
[1]
Markscheme
Helicobacter pylori ✔
To award [1] full scientific name is required.
Examiners report
A large number stated the complete binomial name, as expected; many provided only a partial name; a noticeable number wrote E. coli, something else irrelevant or left the box blank.
