DP Chemistry (last assessment 2024)
Question 20N.3.hl.TZ0.19b(i)
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.hl.TZ0.19b(i) |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | Annotate | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
20N.3.hl.TZ0.19b(i)
Consider the structures of medicinal molecules in section 37 of the data booklet.
(b(i))
Circle the side-chain in penicillin on the structure below.
[1]
Markscheme
✔
Accept a circle that does not surround the amido group.
Do not accept a circle that only surrounds the phenol group.
Examiners report
Most were able to circle the side-chain in penicillin. Common errors included circling only the phenolic group, the four-membered ring or the five-membered ring.