DP Chemistry (first assessment 2025)
Question 23M.2.SL.TZ1.14a
| Date | May 2023 | Marks available | [Maximum mark: 1] | Reference code | 23M.2.SL.TZ1.14a |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Describe | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
23M.2.SL.TZ1.14a
(a)
Describe how viruses differ from bacteria.
[1]
Markscheme
viruses have no nucleus but bacteria do
OR
viruses have no organelles but bacteria do
OR
viruses cannot perform biological functions/reproduce without a host but bacteria can
OR
viruses are not cells but bacteria are
OR
viruses are smaller than bacteria ✓
Accept specific structural differences. Such as “bacteria have cytoplasm/ribosomes but viruses do not" or "viruses can have double stranded RNA/single stranded DNA whereas bacteria always have double stranded DNA".
Do not accept “Bacteria are living and viruses are not”.
