| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.HL.TZ1.13 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 13 | Adapted from | N/A |
Question
For what purpose are restriction endonucleases used in the laboratory?
A. To limit the length of DNA molecules in the nucleus
B. To cut specific base sequences to open DNA molecules
C. To prevent release of DNA from the nucleus
D. To protect viral DNA from digestion by bacterial enzymes
Markscheme
B
Examiners report
[N/A]
