DP Chemistry (last assessment 2024)
Question 17N.3.hl.TZ0.d
| Date | November 2017 | Marks available | [Maximum mark: 1] | Reference code | 17N.3.hl.TZ0.d |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | d | Adapted from | N/A |
d.
[Maximum mark: 1]
17N.3.hl.TZ0.d
In the 20th Century, both fission and fusion were considered as sources of energy but fusion was economically and technically unattainable.
Outline how nuclear ionising radiation can damage DNA and enzymes in living cells.
[1]
Markscheme
production of radicals/•O2–/•OH
OR
direct effect such as breaking bonds/atom migration
Ignore missing dots on radical species.
Accept named radical eg “superoxide radical” OR “hydroxyl radical”.
An example must be given for second alternative.
