DP Biology (first assessment 2025)
Question 19M.2.HL.TZ1.1c
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.HL.TZ1.1c |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Suggest | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 1]
19M.2.HL.TZ1.1c
(c)
Based on the mode of transmission of the Ebola virus, suggest a possible reason for the relationship between population density and the number of Ebola cases in these four countries.
[1]
Markscheme
greater density means more frequent contact with infected people/animals ✔
Need both greater density and frequency of contact
Examiners report
Most candidates correctly used high density and frequency of contact to describe the relationship. Very few responses discussed high density but did not relate it to the frequency of contact. Others focused on modes of transmission alone and did not relate it to density.
