Question 19M.2.SL.TZ1.f
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.2.SL.TZ1.f |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Outline | Question number | f | Adapted from | N/A |
Based on these data, outline the evidence that T-705 has potential to be used as a treatment for EVD.
[2]
a. cells not killed/few cells killed «even at high concentrations» ✔
b. «T-705» effective/viruses reduced/viruses killed at 100 μM
OR
«T-705» very effective/viruses much reduced/nearly all viruses killed at 1000 μM ✔
c. virus concentration decreases as T-705 concentration increases ✔
d. drug has «high» potential for treatment «at high enough concentration» ✔
This was a timely question with Ebola epidemics again causing great problems in parts of Africa. Students were expected to have had some practice at analysing data relating to an epidemic because of this Skill in the programme: Analysis of epidemiological data related to vaccination programmes. It was assumed that candidates would understand terms such as ‘case’, ‘fatal case’, ‘infect’ and ‘treat’.
This was generally very well answered, with candidates correctly concluding that the drug had potential as a treatment because at a high enough dose it reduced the number of viruses without harming a significant number of cells.
