DP Chemistry (last assessment 2024)
Question 17N.3.sl.TZ0.19
| Date | November 2017 | Marks available | [Maximum mark: 4] | Reference code | 17N.3.sl.TZ0.19 |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Explain, State | Question number | 19 | Adapted from | N/A |
19.
[Maximum mark: 4]
17N.3.sl.TZ0.19
Oseltamivir (Tamiflu) and zanamivir (Relenza) are antiviral drugs used to prevent flu.
(a)
State the names of two functional groups that both compounds contain, using section 37 of the data booklet.
[2]
Markscheme
Any two of:
amido
ether
carbonyl
Accept “amide/carboxamide”.
Accept “alkenyl/alkene”.
Accept “amino/amine”.
[Max 2 Marks]
(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»
