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 | Outline | Question number | a | Adapted from | N/A |
Antiviral medications have recently been developed for some viral infections.
Outline one way in which antiviral drugs work.
[1]
Any one of:
alter cell’s genetic material so that virus cannot use it to multiply [✔]
prevent viruses from multiplying by blocking enzyme activity within host cell
OR
inhibit the synthesis of viral components by blocking enzymes inside the cell [✔]
prevent viruses from entering «host» cell
OR
bind to cellular receptors targeted by viruses
OR
bind to virus-associated proteins/VAPs which target cellular receptors
OR
prevents removal of protein coat/capsid
OR
prevents injection of viral DNA/RNA into cell [✔]
prevent/hinder the release of viruses from the cell [✔]
Note: Accept “prevents synthesis of virus by host cell”.
Accept “alters RNA/DNA/genetic material of virus”.
Do not accept just “mimics nucleotides”.
Candidates responded fairly well to this question. Candidates who did not receive a mark were either too vague or discussed anti-bacterial methods.
