DP Chemistry (last assessment 2024)
Question 17N.3.sl.TZ0.19b
| Date | November 2017 | Marks available | [Maximum mark: 2] | Reference code | 17N.3.sl.TZ0.19b |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Explain | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
17N.3.sl.TZ0.19b
Oseltamivir (Tamiflu) and zanamivir (Relenza) are antiviral drugs used to prevent flu.
(b)
Explain how oseltamivir and zanamivir can stop the spread of the flu virus in the body.
[2]
Markscheme
by preventing the virus from leaving the host cell
by inhibiting viral enzymes/neuraminidases «needed to release virus»
