DP Chemistry (last assessment 2024)
Question 18M.3.sl.TZ1.a
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.3.sl.TZ1.a |
| Level | sl | Paper | 3 | Time zone | TZ1 |
| Command term | Explain | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
18M.3.sl.TZ1.a
Antiviral drugs are a major research focus.
Oseltamivir (Tamiflu) and zanamivir (Relenza) are used against flu viruses. Explain how these drugs function.
[2]
Markscheme
blocks/inhibits neuraminidase/NA/«viral» enzyme which allows viruses to pass through cell membrane
prevent virus from leaving/escaping host cell «thus it cannot infect other cells»
[2 marks]
